5.56x45mm NATO Bolt Assembly Steel For AR-15
$104.49 at Brownells · 4 stores
In stock
PSA 5.56 Phosphate MPI Full-Auto Bolt Carrier Group
Palmetto State Armory · Bolt Carrier Group
No ratings yetBest price
$99.99at Palmetto State Armory
checked Oct 1, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Palmetto State Armory | $99.99checked Oct 1, 2026 | Check store | Buy at Palmetto State Armory |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Palmetto State Armory | $99.99 | $99.99 | $99.99 |
Since Sep 28, 2026.
About this part
The PSA 5.56 Phosphate MPI Full-Auto Bolt Carrier Group is a 5.56 / .223 bolt carrier group from Palmetto State Armory. One store lists it, Palmetto State Armory at $99.99.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Specifications
- Manufacturer
- Palmetto State Armory
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
- Finish
- Phosphate
From the manufacturer
PSA 5.56 Phosphate MPI Full-Auto Bolt Carrier Group
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