Does the PSA 8.5" Pistol-length 5.56 NATO 1/7 work with the PSA 5.56 Phosphate MPI Full-Auto?
Upper Receiver
PSA 8.5" Pistol-length 5.56 NATO 1/7 Nitride 7" Lightweight
from $219.99
Bolt Carrier Group
PSA 5.56 Phosphate MPI Full-Auto
from $99.99
Palmetto State Armory upper and Palmetto State Armory bolt carrier group compatibility
Yes, they fit
The PSA 8.5" Pistol-length 5.56 NATO 1/7 Nitride 7" works with the PSA 5.56 Phosphate MPI Full-Auto. Our compatibility rules found no conflict between them.
This exact setup has been built more than once on GunPartPicker.
Counted from real GunPartPicker builds: parts lists people put together while planning to buy.
Checked by the same rules the AR builder runs on every part you add: caliber, frame size, receiver pattern, thread pitch and gas length.
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.
How often builders pair the Palmetto State Armory upper and Palmetto State Armory bolt carrier group
Backed by thousands of qualified builds that have both an upper and a bolt carrier group.
Share of builds with the PSA 8.5" Pistol-length 5.56 NATO 1/7 and any bolt carrier group
- This pairPSA 5.56 Phosphate MPI Full-Auto11%
Share of builds with the PSA 5.56 Phosphate MPI Full-Auto and any upper
- This pairPSA 8.5" Pistol-length 5.56 NATO 1/7 Nitride 7"18%
PSA 8.5" Pistol-length 5.56 NATO 1/7
- Of upper picks
- 0.2%
- Median paid
- $220
PSA 5.56 Phosphate MPI Full-Auto
- Of bolt carrier group picks
- 0.1%
- Median paid
- $100
How we count ⌄
These shares come from GunPartPicker's build data: real parts lists people put together while planning a purchase, not sales or surveys. A build counts a part only when it is the final pick for its slot, so parts that were swapped out never count. Fit never comes from these numbers; it comes from our compatibility rules alone.
Frequently built with the Palmetto State Armory upper and Palmetto State Armory bolt carrier group
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Charging Handle
Lower Receiver
Fits both
Trigger
Muzzle Device
Pistol Grip
Gas Block
Suppressor
Barrel
Diamondback Firearms .300 Blackout
Fits both
PSA 8.5" Pistol-length 5.56 vs PSA 5.56 Phosphate MPI: specs and prices
| PSA 8.5" Pistol-length 5.56 | PSA 5.56 Phosphate MPI | |
|---|---|---|
| Best price | $219.99 at Palmetto State Armory | $99.99 at Palmetto State Armory |
| Stores | 1 of 1 in stock | 1 of 1 in stock |
| Assembly | Complete | n/a |
| Platform | AR-15 | n/a |
| Gas System Length | Pistol | n/a |
| Caliber | 5.56 NATO | n/a |
| Length | 8.5 | n/a |
| Cartridge | n/a | 5.56 NATO |
| Finish | n/a | Phosphate |
Both for $319.98 at today's best prices.
Today's best prices and 90 day price history
Every store we track for each part, cheapest in stock first. Prices are checked through the day.
Price history, last 90 days
- PSA 8.5" Pistol-length 5.56 NATO 1/7: lowest $219.99 on Jul 12, highest $219.99 on Jul 12 over the last 90 days.
- PSA 5.56 Phosphate MPI Full-Auto: lowest $99.99 on Jul 12, highest $99.99 on Jul 12 over the last 90 days.
Bolt Carrier Groups frequently paired with the PSA 8.5" Pistol-length 5.56 NATO 1/7
Most picked next to it in real builds. Only parts our rules say fit the PSA 8.5" Pistol-length 5.56 NATO 1/7 are listed.
ToolCraft 6.8 SPC Nitride
Fits, check noteCheck fit
Upper Receivers frequently paired with the PSA 5.56 Phosphate MPI Full-Auto
Most picked next to it in real builds. Only parts our rules say fit the PSA 5.56 Phosphate MPI Full-Auto are listed.
