National Defense R&D Services: Defense-Related Activities (R&D Administrative Expenses) Government Contracts
PSC AC34 Service code
Code facts
- Spend category
- Professional Services
- Part of
-
-
A
- AC
-
A
- Contract obligations
- $66,041,246 In FY2025
PSC codes and definitions come from the GSA PSC Manual and contract spending from SAM.gov/FPDS.
Market summary
Top buying agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Air Force | $76,602,571 | |
| 2 | Office of the Secretary of Defense | $45,530,728 | |
| 3 | Department of the Navy | $20,955,103 | |
| 4 | Department of the Army | $6,067,653 | |
| 5 | Defense Health Agency | $5,698,212 | |
| 6 | Defense Logistics Agency | $1,805,299 | |
| 7 | Missile Defense Agency | $281,068 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Advanced Technology International | $41,012,496 | |
| 2 | Slingshot Aerospace Inc. | $21,989,615 | |
| 3 | Ansys Government Initiatives, LLC | $18,341,067 | |
| 4 | Galapagos Federal Systems LLC | $16,312,000 | |
| 5 | Bowhead Program Management & Operations, LLC | $11,885,024 | |
| 6 | V2X Systems LLC | $10,442,667 | |
| 7 | Vannevar Labs, Inc. | $5,555,000 | |
| 8 | General Atomics | $4,142,130 | |
| 9 | New Mexico Texas Coaches LLC | $3,935,315 | |
| 10 | Chenega Services & Federal Solutions, LLC | $3,165,756 |
See the full FY2025 ranking of PSC AC34 contractors, by parent company.
Open contract opportunities
Recent contract awards
Latest 10 of 21 awarded in the last 12 months listed here. See the rest on GovTribe.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $156,940,634 |
| FY2025 | $66,041,246 |
| FY2024 | $95,006,071 |
| FY2023 | $101,275,176 |
Top NAICS codes by obligations
| Rank | NAICS code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $69,164,525 | |
| 2 | 541330 Engineering Services | $14,929,269 | |
| 3 | 561210 Facilities Support Services | $10,442,667 | |
| 4 | 541714 Research and Development in Biotechnology (except Nanobiotechnology) | $5,698,212 | |
| 5 | 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing | $4,204,389 | |
| 6 | 485113 Bus and Other Motor Vehicle Transit Systems | $3,935,315 | |
| 7 | 541519 Other Computer Related Services | $1,730,500 | |
| 8 | 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) | $273,777 | |
| 9 | 541690 Other Scientific and Technical Consulting Services | $30,250 | |
| 10 | 811490 Other Personal and Household Goods Repair and Maintenance | $2,283 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Virginia | $51,585,346 | |
| 2 | California | $28,113,897 | |
| 3 | Pennsylvania | $18,341,067 | |
| 4 | Hawaii | $15,312,000 | |
| 5 | Alabama | $6,043,443 | |
| 6 | Maryland | $5,588,115 | |
| 7 | Colorado | $5,253,864 | |
| 8 | Texas | $4,211,374 | |
| 9 | Rhode Island | $3,380,270 | |
| 10 | Florida | $1,730,500 | |
| 11 | South Carolina | $1,036,768 | |
| 12 | Oklahoma | $111,179 | |
| 13 | Illinois | $30,250 | |
| 14 | Michigan | $24,210 |
Show all 14
Shares are of everything obligated under PSC AC34 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Quick answers
What is PSC AC34?
PSC AC34 is National Defense R&D Services; Defense-Related Activities; R&D Administrative Expenses, a service code in PSC A, Research and Development.
How many government contracts for national defense R&D services: defense-related activities (R&D administrative expenses) are there?
3 contract opportunities under PSC AC34 are open now. Federal agencies awarded 21 contracts under PSC AC34 in the last 12 months, obligating $151,294,117.
How much do federal agencies spend under PSC AC34?
Federal contracts under PSC AC34 obligated $66,041,246 in fiscal year 2025 and $419,263,129 in fiscal years 2023 through 2027.
Who are the largest contractors under PSC AC34?
The contractors with the most obligated under PSC AC34 in fiscal years 2026 and 2027 are Advanced Technology International ($41,012,496); Slingshot Aerospace Inc. ($21,989,615); and Ansys Government Initiatives, LLC ($18,341,067).
Which agencies buy the most under PSC AC34?
The agencies that obligated the most under PSC AC34 in fiscal years 2026 and 2027 are Air Force ($76,602,571), Office of the Secretary of Defense ($45,530,728) and Department of the Navy ($20,955,103).
Which NAICS codes are used with PSC AC34?
The NAICS codes with the most obligated under PSC AC34 in fiscal years 2026 and 2027 are 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology); 541330 Engineering Services; and 561210 Facilities Support Services.
Where is the work under PSC AC34 performed?
By place of performance, the states with the most contract obligations under PSC AC34 over the last 12 months are Virginia ($51,585,346), California ($28,113,897) and Pennsylvania ($18,341,067).
What is the latest open contract opportunity under PSC AC34?
The latest open contract opportunity under PSC AC34 is TECHNOLOGY LICENSING OPPORTUNITY: True Silicone DLP Printing Platform, special notice from Department of Energy, posted June 29, 2026.
On GovTribe
See everything under PSC AC34
- Federal contract opportunities, awards and IDVs under this code
- Funding analysis by contractor, agency and set-aside
- Contacts who buy under this code
- Ask GovTribe AI about this code