Top 100 Contractors in NAICS 332993: Ammunition (except Small Arms) Manufacturing, FY2021

Name: Top 100 Contractors in NAICS 332993: Ammunition (except Small Arms) Manufacturing, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 82% of FY2021 NAICS 332993 contract dollars

Contract obligations: $4,161,293,632 Net of deobligations, by contracts coded NAICS 332993
Contractors: 150 Parent companies with an obligation
Largest contractor: RTX Corporation $766 million, 18.0% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	RTX Corporation 5 awardees, including Raytheon Company, Rockwell Collins, Inc. and Simmonds Precision Products Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$766,430,652	18.0%	Rank history: #3 in FY2022, #2 in FY2023, #5 in FY2024 and #6 in FY2025; up 13 since FY2020.
2	The Boeing Company Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$749,405,785	17.6%	Rank history: #5 in FY2022, #4 in FY2023, #3 in FY2024 and #5 in FY2025; down 1 since FY2020.
3	General Dynamics Corporation 10 awardees, including General Dynamics-Ots, Inc., General Dynamics Ordnance and Tactical Systems, Inc. and Arcwood Environmental - Joplin, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DCMA (Defense Contract Management Agency)	$607,524,803	14.3%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; down 1 since FY2020.
4	Northrop Grumman Corporation 8 awardees, including Alliant Techsystems Operations LLC, Northrop Grumman Systems Corporation and Northrop Grumman Innovation Systems LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$287,677,243	6.8%	Rank history: #2 in FY2022, #5 in FY2023, #2 in FY2024 and #2 in FY2025; down 1 since FY2020.
5	National Presto Industries 3 awardees, including Amtec Corporation and Spectra Technologies LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$256,720,306	6.0%	Rank history: #10 in FY2022, #12 in FY2023, #4 in FY2024 and #7 in FY2025; up 7 since FY2020.
6	General Dynamics OTS (Wilkes Barre), LLC Top agencies Army (Department of the Army)	$237,589,755	5.6%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
7	L3Harris Technologies, Inc. 3 awardees, including L3Harris Fuzing and Ordnance Systems, Inc. and L3 Technologies, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$152,751,424	3.6%	Rank history: #13 in FY2022, #17 in FY2023, #33 in FY2024 and #9 in FY2025; unchanged since FY2020.
8	Lockheed Martin Corporation 3 awardees, including Lockheed Martin Sippican, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$150,365,736	3.5%	Rank history: #20 in FY2022, #14 in FY2023, #24 in FY2024 and #14 in FY2025; up 15 since FY2020.
9	American Ordnance LLC 2 awardees Top agencies Army (Department of the Army)	$139,845,150	3.3%	Rank history: #18 in FY2022, #8 in FY2023, #14 in FY2024 and #11 in FY2025; down 5 since FY2020.
10	Government of Canada Through Canadian Commercial Corporation Top agencies Army (Department of the Army)	$126,181,456	3.0%	Rank history: #17 in FY2022, #15 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
11	Saab AB Through Saab Dynamics Aktiebolag Top agencies Army (Department of the Army)	$85,686,889	2.0%	Rank history: #7 in FY2022, #16 in FY2023, #31 in FY2024 and not on the FY2025 list; down 6 since FY2020.
12	Leidos Holdings, Inc. Through Dynetics, Inc. Top agencies USAF (Department of the Air Force)	$74,505,620	1.8%	Rank history: #24 in FY2022, #38 in FY2023, not on the FY2024 list and #35 in FY2025; up 16 since FY2020.
13	General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy)	$51,219,949	1.2%	Rank history: #19 in FY2022, #37 in FY2023, #53 in FY2024 and not on the FY2025 list; up 5 since FY2020.
14	Superior Forge & Steel Corp Top agencies USAF (Department of the Air Force)	$46,811,081	1.1%	Rank history: not on the FY2022 list, #29 in FY2023 and not on the FY2024–FY2025 lists; up 12 since FY2020.
15	Kaman Corp Through Kaman Precision Products, LLC Top agencies USAF (Department of the Air Force)	$42,855,736	1.0%	Rank history: #68 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
16	Tower Industries Inc. Top agencies Army (Department of the Army)	$37,418,118	0.9%	Rank history: #21 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
17	Global Ordnance LLC 2 awardees, including Global Military Products Inc. Top agencies Army (Department of the Army)	$29,309,748	0.7%	Rank history: #4 in FY2022, #3 in FY2023, #7 in FY2024 and not on the FY2025 list; unchanged since FY2020.
18	Day & Zimmermann Lone Star LLC Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense)	$27,664,184	0.7%	Rank history: #38 in FY2022, #9 in FY2023, #18 in FY2024 and #16 in FY2025; up 33 since FY2020.
19	Transdigm Group Incorporated 2 awardees, including Armtec Defense Products Co. and Armtec Countermeasures Co Top agencies Army (Department of the Army)	$26,562,017	0.6%	Rank history: #29 in FY2022, #7 in FY2023, #79 in FY2024 and not on the FY2025 list; up 12 since FY2020.
20	Alliant Techsystems Operations LLC Top agencies Army (Department of the Army)	$24,187,438	0.6%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
21	Action Manufacturing Company Top agencies Army (Department of the Army)	$21,759,914	0.5%	Rank history: #14 in FY2022, #13 in FY2023, #16 in FY2024 and #17 in FY2025; down 1 since FY2020.
22	Nammo Pocal Inc. Top agencies Army (Department of the Army)	$21,560,639	0.5%	Rank history: #35 in FY2022, #21 in FY2023, #19 in FY2024 and #18 in FY2025; up 3 since FY2020.
23	Arnold Defense & Electronics, LLC Top agencies Navy (Department of the Navy)	$19,773,594	0.5%	Rank history: #42 in FY2022, #93 in FY2023 and not on the FY2024–FY2025 lists; up 21 since FY2020.
24	American Rheinmetall Munition Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$18,330,913	0.4%	Rank history: #25 in FY2022 and not on the FY2023–FY2025 lists; down 5 since FY2020.
25	IMT Defense Corp Top agencies Army (Department of the Army)	$17,229,920	0.4%	Rank history: #28 in FY2022, #6 in FY2023, #17 in FY2024 and #12 in FY2025; up 8 since FY2020.
26	General Dynamics Ordnance & Tactical Systems, Inc. 2 awardees Top agencies Army (Department of the Army)	$13,869,201	0.3%	Rank history: #8 in FY2022, not on the FY2023 list, #6 in FY2024 and #45 in FY2025; down 10 since FY2020.
27	Raytheon Company 2 awardees Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$13,437,137	0.3%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
28	The Day & Zimmermann Group, Inc. Through Day and Zimmermann, Incorporated Top agencies Army (Department of the Army)	$10,238,071	0.2%	Rank history: #30 in FY2022, #10 in FY2023, #15 in FY2024 and not on the FY2025 list; down 1 since FY2020.
29	Major Tool & Machine Inc. Top agencies USAF (Department of the Air Force)	$9,666,495	0.2%	Rank history: not on the FY2022–FY2023 lists, #36 in FY2024 and not on the FY2025 list; down 5 since FY2020.
30	Faxon Machining, LLC Top agencies USAF (Department of the Air Force)	$9,450,000	0.2%	Rank history: #26 in FY2022, #23 in FY2023, #32 in FY2024 and #21 in FY2025; up 10 since FY2020.
31	BAE Systems PLC 3 awardees, including BAE Systems Ordnance Systems Inc. Top agencies Army (Department of the Army)	$8,500,901	0.2%	Rank history: #9 in FY2022, #18 in FY2023, not on the FY2024 list and #38 in FY2025; down 21 since FY2020.
32	Envirosafe Demil LLC Top agencies Army (Department of the Army)	$8,472,705	0.2%	Rank history: #23 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
33	G.d.o., Inc. Top agencies Army (Department of the Army)	$6,242,490	0.1%	Rank history: #37 in FY2022, #24 in FY2023, not on the FY2024 list and #44 in FY2025; up 14 since FY2020.
34	Innovative Technologies International, Inc. Top agencies Army (Department of the Army)	$6,123,855	0.1%	Rank history: #54 in FY2022, not on the FY2023–FY2024 lists and #48 in FY2025; new, not ranked in FY2020.
35	Flexible Concepts Inc. Top agencies Army (Department of the Army)	$5,951,461	0.1%	Rank history: not on the FY2022 list, #63 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2020.
36	CCI Capco, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$5,347,609	0.1%	Rank history: #45 in FY2022, #47 in FY2023, #57 in FY2024 and #46 in FY2025; up 3 since FY2020.
37	Rdzm, LLC Top agencies Army (Department of the Army)	$5,146,937	0.1%	Rank history: #43 in FY2022, #40 in FY2023, #95 in FY2024 and #37 in FY2025; up 8 since FY2020.
38	Lakeview Forge Company Top agencies Army (Department of the Army)	$5,121,734	0.1%	Rank history: #51 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
39	Diehl Stiftung & Co. KG Through Junghans Microtec GMBH Top agencies Army (Department of the Army)	$4,162,503	0.1%	Rank history: #34 in FY2022 and not on the FY2023–FY2025 lists; down 3 since FY2020.
40	Vista Outdoor Inc. 2 awardees, including The Kinetic Group Sales LLC Top agencies DHS (Department of Homeland Security)	$3,527,982	0.1%	Rank history: #40 in FY2022, #43 in FY2023, #49 in FY2024 and #51 in FY2025; up 13 since FY2020.
41	Nammo AS 3 awardees, including Nammo Raufoss AS and Nammo Perry Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$3,292,308	0.1%	Rank history: #6 in FY2022, #11 in FY2023, #41 in FY2024 and not on the FY2025 list; up 14 since FY2020.
42	Gayston Corporation Top agencies Army (Department of the Army)	$2,979,591	0.1%	Rank history: not on the FY2022–FY2025 lists; up 25 since FY2020.
43	Sechan Electronics Inc. Top agencies Navy (Department of the Navy)	$2,830,456	0.1%	Rank history: #65 in FY2022, #76 in FY2023, not on the FY2024 list and #72 in FY2025; up 18 since FY2020.
44	Tool Masters Inc. Top agencies Army (Department of the Army)	$2,665,060	0.1%	Rank history: #48 in FY2022, #42 in FY2023, #56 in FY2024 and not on the FY2025 list; up 21 since FY2020.
45	Expal USA Inc. Top agencies Army (Department of the Army)	$2,534,477	0.1%	Rank history: not on the FY2022 list, #49 in FY2023 and not on the FY2024–FY2025 lists; up 76 since FY2020.
46	Omega Container, Inc. Top agencies Army (Department of the Army)	$2,244,245	0.1%	Rank history: not on the FY2022–FY2025 lists; up 12 since FY2020.
47	Security Signals, Inc. Top agencies Army (Department of the Army)	$2,080,800	<0.1%	Rank history: #41 in FY2022, #26 in FY2023, #72 in FY2024 and #33 in FY2025; up 5 since FY2020.
48	EPS Corporation Top agencies Navy (Department of the Navy)	$2,072,150	<0.1%	Rank history: #76 in FY2022 and not on the FY2023–FY2025 lists; up 1 since FY2020.
49	Ordnance Technology Service, Inc. Top agencies Navy (Department of the Navy)	$1,778,128	<0.1%	Rank history: not on the FY2022–FY2023 lists, #59 in FY2024 and #49 in FY2025; new, not ranked in FY2020.
50	Woodlawn Manufacturing, Ltd. Top agencies Army (Department of the Army)	$1,750,420	<0.1%	Rank history: #59 in FY2022 and not on the FY2023–FY2025 lists; up 44 since FY2020.
51	RTI Technologies, LLC 2 awardees Top agencies Navy (Department of the Navy)	$1,357,296	<0.1%	Rank history: #50 in FY2022, #62 in FY2023, #71 in FY2024 and #60 in FY2025; up 29 since FY2020.
52	Machining Technologies, Inc. Top agencies Army (Department of the Army)	$1,067,280	<0.1%	Rank history: #39 in FY2022, #27 in FY2023, #40 in FY2024 and #36 in FY2025; down 14 since FY2020.
53	Premier Precision Machining LLC Top agencies Army (Department of the Army)	$754,073	<0.1%	Rank history: #44 in FY2022, #46 in FY2023, #37 in FY2024 and #20 in FY2025; up 10 since FY2020.
54	UDC Usa, Inc. Top agencies Army (Department of the Army)	$752,601	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.
55	Rheinmetall AG Through Rheinmetall Waffe Munition GMBH Top agencies Army (Department of the Army)	$740,565	<0.1%	Rank history: #86 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
56	Integrated Solutions for Systems, Inc. Top agencies USAF (Department of the Air Force)	$500,673	<0.1%	Rank history: #36 in FY2022, not on the FY2023 list, #28 in FY2024 and #22 in FY2025; up 19 since FY2020.
57	Applied Research Associates, Inc. Top agencies USAF (Department of the Air Force)	$500,244	<0.1%	Rank history: #84 in FY2022, #31 in FY2023, #38 in FY2024 and #23 in FY2025; new, not ranked in FY2020.
58	R. S. Means Company LLC Through Pacific Scientific Energetic Materials Company (California Llc) Top agencies Navy (Department of the Navy)	$463,600	<0.1%	Rank history: #60 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
59	OM Group Inc. Through Eaglepicher Technologies LLC Top agencies Navy (Department of the Navy)	$460,222	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
60	Container Ventures Inc Through Modular Container Systems, Inc. Top agencies Army (Department of the Army)	$456,719	<0.1%	Rank history: #53 in FY2022, #67 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
61	General Electric Company Inc. Top agencies DOE (Department of Energy)	$350,000	<0.1%	Rank history: #62 in FY2022, not on the FY2023–FY2024 lists and #74 in FY2025; up 3 since FY2020.
62	Fike Corporation Through Cartridge Actuated Devices Inc. Top agencies Navy (Department of the Navy)	$315,853	<0.1%	Rank history: not on the FY2022 list, #60 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
63	Combined Systems Inc. Top agencies AAFES (Department of Defense Army and Air Force Exchange Service) DOJ (Department of Justice)	$295,029	<0.1%	Rank history: #71 in FY2022, #83 in FY2023, #86 in FY2024 and #85 in FY2025; up 3 since FY2020.
64	Pacem Solution International LLC Through Als, Inc. Top agencies DOJ (Department of Justice)	$211,108	<0.1%	Rank history: #79 in FY2022, #77 in FY2023 and not on the FY2024–FY2025 lists; up 14 since FY2020.
65	Ultimate Training Munitions, Inc. Top agencies DHS (Department of Homeland Security)	$206,493	<0.1%	Rank history: #70 in FY2022, #64 in FY2023, #80 in FY2024 and #70 in FY2025; new, not ranked in FY2020.
66	Capstone Precision Group, LLC Top agencies DHS (Department of Homeland Security)	$187,875	<0.1%	Rank history: #72 in FY2022, #68 in FY2023, not on the FY2024 list and #90 in FY2025; new, not ranked in FY2020.
67	A2Z Supply Corp Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$185,198	<0.1%	Rank history: #66 in FY2022, #70 in FY2023, not on the FY2024 list and #89 in FY2025; up 5 since FY2020.
68	Aerojet Rocketdyne Holdings, Inc. 2 awardees, including Bwxt Ordnance Tennessee, Inc. and Aerojet Rocketdyne Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$176,430	<0.1%	Rank history: not on the FY2022 list, #25 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
69	Lockheed Martin Sippican, Inc. Top agencies Army (Department of the Army)	$140,298	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
70	Hornady Manufacturing Company Top agencies DOJ (Department of Justice)	$128,790	<0.1%	Rank history: #81 in FY2022, #96 in FY2023 and not on the FY2024–FY2025 lists; up 49 since FY2020.
71	Seneca Global Services LLC Top agencies DOS (Department of State)	$117,238	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 10 since FY2020.
72	Olin Winchester LLC Top agencies DHS (Department of Homeland Security) DOI (Department of the Interior) USDA (Department of Agriculture)	$105,778	<0.1%	Rank history: #69 in FY2022 and not on the FY2023–FY2025 lists; up 23 since FY2020.
73	Quantico Tactical Incorporated Top agencies WHS (DOD Washington Headquarters Service)	$77,792	<0.1%	Rank history: not on the FY2022–FY2024 lists and #100 in FY2025; new, not ranked in FY2020.
74	Amornmas Company Limited Top agencies DOS (Department of State)	$66,970	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
75	State of Arizona Through Arizona Department of Emergency & Military Affairs Top agencies Army (Department of the Army)	$62,033	<0.1%	Rank history: #80 in FY2022, not on the FY2023 list, #89 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
76	Basic Rubber and Plastics Co. Top agencies DLA (Defense Logistics Agency)	$51,829	<0.1%	Rank history: #78 in FY2022, #87 in FY2023, #96 in FY2024 and #77 in FY2025; up 9 since FY2020.
77	The Harrah and Reynolds Corporation Through American Babbitt Bearing Inc. Top agencies Army (Department of the Army)	$43,700	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
78	Ellwood Group Inc. Through Ellwood National Forge Company Top agencies Army (Department of the Army)	$40,300	<0.1%	Rank history: not on the FY2022 list, #34 in FY2023 and not on the FY2024–FY2025 lists; down 44 since FY2020.
79	Tact360, Inc. Top agencies DLA (Defense Logistics Agency)	$36,644	<0.1%	Rank history: not on the FY2022 list, #94 in FY2023, not on the FY2024 list and #88 in FY2025; up 37 since FY2020.
80	Herc Leasing Inc. Top agencies DOJ (Department of Justice)	$30,994	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
81	Dms-South / Bailey Tool LLC Top agencies Navy (Department of the Navy)	$25,700	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 25 since FY2020.
82	Security Equipment Corporation Top agencies DOJ (Department of Justice)	$23,003	<0.1%	Rank history: #93 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; up 19 since FY2020.
83	Advanced Precision Machining, LLC Top agencies Army (Department of the Army)	$18,328	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
84	SIG Sauer Inc. Top agencies VA (Department of Veterans Affairs)	$15,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
85	United Tactical Systems, LLC Top agencies DOJ (Department of Justice)	$13,524	<0.1%	Rank history: #87 in FY2022, #97 in FY2023 and not on the FY2024–FY2025 lists; up 19 since FY2020.
86	L3 Technologies, Inc. Top agencies USAF (Department of the Air Force)	$11,446	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 40 since FY2020.
87	Safariland LLC 2 awardees Top agencies DOJ (Department of Justice)	$7,667	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 21 since FY2020.
88	Liberty Dynamic LLC Top agencies DOJ (Department of Justice)	$7,128	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
89	Priax Corporation Top agencies DOJ (Department of Justice)	$6,254	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
90	Victor Forward LLC Top agencies DOJ (Department of Justice)	$4,715	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
91	Glock Privatstiftung Through Glock, Inc. Top agencies DOJ (Department of Justice)	$4,572	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
92	Olin Corporation Top agencies DOI (Department of the Interior)	$4,203	<0.1%	Rank history: not on the FY2022 list, #74 in FY2023 and not on the FY2024–FY2025 lists; down 8 since FY2020.
93	Powder Inc. Top agencies DOI (Department of the Interior)	$2,106	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 16 since FY2020.
94	Riverside Research Institute 2 awardees, including Applied Research Solutions, Inc. Top agencies USAF (Department of the Air Force)	$2,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
95	CPR Savers & First Aid Supply, LLC Top agencies DLA (Defense Logistics Agency)	$1,931	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
96	Clyde Armory Inc. Top agencies DOJ (Department of Justice)	$1,455	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
97	T.r. Machine, Inc. Top agencies DLA (Defense Logistics Agency)	$1,286	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
98	Serco North America (Holdings) Inc Through Serco Inc. Top agencies USAF (Department of the Air Force)	$1,000	<0.1%	Rank history: #58 in FY2022, #61 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
99	Accurate Machine & Tool Corporation Top agencies USAF (Department of the Air Force)	$1,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	Blue Force Technologies, LLC Top agencies USAF (Department of the Air Force)	$1,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.

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100 of 150 contractors listed here. See the rest on GovTribe.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $4.25 billion obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2020. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2020 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 332993 contractors in FY2021?

1. RTX Corporation ($766M), 2. The Boeing Company ($749M), 3. General Dynamics Corporation ($608M), 4. Northrop Grumman Corporation ($288M), 5. National Presto Industries ($257M), 6. General Dynamics OTS (Wilkes Barre), LLC ($238M), 7. L3Harris Technologies, Inc. ($153M), 8. Lockheed Martin Corporation ($150M), 9. American Ordnance LLC ($140M), 10. Government of Canada ($126M).

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