Do PSA lowers fit TacFire uppers?
PSA lower + TacFire upper: yes, they fit
Yes. Palmetto State Armory (PSA) AR-15 lowers fit TacFire AR-15 uppers. Both are AR-15 size receivers. A real mil-spec keeps AR-15 receivers from different makers close, though not exact, and fit problems show up most when the upper and lower come from different makers. PSA and TacFire AR-9 (9mm) lowers and uppers fit each other too.
One exception: PSA AR-15 lowers are a smaller frame and do not fit TacFire AR-10 (.308) uppers. One catch: AR-10 parts aren't standardized between makers, so ask Palmetto State Armory and TacFire if this lower and upper fit before you buy.
Fit comes from the same rules the AR builder runs on every part you add. Build data only ranks the setups; it never decides fit. Checked October 31, 2026.
Our take
Most built setup: the PSA Lower Magpul MOE EPT Edition with the TacFire 7in Upper 5.56x45mm 1:8.
About 1 in 15 PSA lowers in our builds carries a TacFire upper.
PSA sells affordable AR lowers, uppers, BCGs and complete rifles, and it makes them in house from forging to finished part.
Founded 2008, Columbia, South Carolina, Made in USA
TacFire is a dealer only wholesaler, so you'll find its stripped uppers, lower parts kits and AR kits at online retailers, not on its own site.
PSA lowers and TacFire uppers by platform
Each row is checked on the most built part of that platform from each brand.
| Platform | Fit |
|---|---|
| AR-15 | Yes, they fit |
| AR-10 (.308) | They fit, with a catch |
| AR-9 (9mm) | Yes, they fit |
| AR-15 lower + AR-10 (.308) upper | No, they do not fit |
AR-15: yes, they fit
Both are AR-15 size receivers. An AR-15 lower takes the upper's 5.56 NATO.
Checked on this PSA lower
PSA Lower Magpul MOE EPT Edition$179.99and this TacFire upper
Tacfire 7" Upper 5.56x45mm 1:8$258.99AR-10 (.308): they fit, with a catch
AR-10 parts aren't standardized between makers, so ask Palmetto State Armory and TacFire if this lower and upper fit before you buy.
Checked on this PSA lower
PSA GEN3 PA10 Forged MOE EPT SBA4 .308 Lower$209.99and this TacFire upper
Tacfire 18" Upper .308 Win 1:10$395.23AR-9 (9mm): yes, they fit
Both are AR-9 receivers. A 9mm lower takes the upper's 9mm.
Checked on this PSA lower
PSA PX-9 Glock-style MOE EPT SBA3 Pistol Lower$319.99and this TacFire upper
Tacfire 10" Upper 9mm 1:10$266.98AR-15 lower + AR-10 (.308) upper: no, they do not fit
The lower receiver (AR-15) cannot support a AR-10/.308 build.
Checked on this PSA lower
PSA Lower Magpul MOE EPT Edition$179.99and this TacFire upper
Tacfire 18" Upper .308 Win 1:10$395.23Most built PSA lowers and TacFire uppers setups
Ranked by how often builders pick the exact pair. Only pairs our rules pass are listed.
#1Yes, they fit11% of these buildsCheck fit
#2They fit, with a catch6% of these buildsCheck fit
#3They fit, with a catch6% of these buildsCheck fit
#4They fit, with a catch5% of these buildsCheck fit
#5Yes, they fit4% of these buildsCheck fit
#6They fit, with a catch4% of these buildsCheck fit
#7They fit, with a catch3% of these buildsCheck fit
#8They fit, with a catch3% of these buildsCheck fit
What PSA and TacFire say
PSA: PSA owns its supply chain, including Spartan Forging and DC Machine, from forging the receivers to finishing the muzzle brake.
PSA: PSA's Gen3 PA10 lowers work with Gen1 and Gen2 PA10 uppers, but Gen3 with Gen3 is recommended for the best look and performance, since mixed generations differ on the outside.
PSA: The PSA PA-10 follows the DPMS pattern, so it can use a wide range of DPMS style parts.
PSA: PSA's PX-9 lower takes Glock style magazines, is designed to work with PSA's 9mm Hybrid uppers and has no last round bolt hold open.
TacFire: The UP01C stripped upper is 7075-T6 aluminum with a black hardcoat anodized finish and M4 feed ramps.
TacFire: TacFire's 18 inch .308 complete upper is designed for the AR-10 style platform and sold with a bolt carrier group.
TacFire: TacFire's UP01C stripped upper comes with the dust cover and forward assist installed. It still needs a barrel, BCG, charging handle, handguard, gas block, gas tube and muzzle device.
Fit is judged from the specs retailers list, which can be missing or wrong. Confirm with the manufacturer before you buy, and have a qualified gunsmith check any build before you fire it.
Other uppers builders put on PSA lowers
- PSA lowers + PSA uppersMost picked
- PSA lowers + BCM uppersSecond most picked
- PSA lowers + Aero uppersThird most picked
- PSA lowers + Geissele uppersFifth most picked
- PSA lowers + Radical uppersSixth most picked
- PSA lowers + Daniel Defense uppersSeventh most picked
- PSA lowers + Wilson Combat uppersEighth most picked
- PSA lowers + YHM uppersNinth most picked
Other lowers under TacFire uppers
- Smith & Wesson lowers + TacFire uppersSecond most picked
- Wilson Combat lowers + TacFire uppersThird most picked
- Sharps Bros lowers + TacFire uppersFourth most picked
- Aero lowers + TacFire uppersFifth most picked
PSA lowers and TacFire uppers: questions builders ask
Will a TacFire upper fit a PSA lower?
Yes. PSA AR-15 lowers fit TacFire AR-15 uppers. Both are AR-15 size receivers.
Do I need a matched upper and lower?
A real mil-spec keeps AR-15 receivers from different makers close, though not exact, and fit problems show up most when the upper and lower come from different makers.
Does a PSA AR-10 lower fit a TacFire upper?
PSA AR-10 (.308) lowers fit TacFire AR-10 (.308) uppers, with one thing to check. AR-10 parts aren't standardized between makers, so ask Palmetto State Armory and TacFire if this lower and upper fit before you buy. PSA AR-15 lowers are a smaller frame and do not fit TacFire AR-10 (.308) uppers.
Why might a TacFire upper feel loose or tight on a PSA lower?
Some play between an AR-15 upper and lower is common, but it can get excessive when the two come from different makers, and a tension screw or an Accu-Wedge takes it up.