Palmetto State Armory

PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953

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Palmetto State Armory PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953 - Bolt Carrier Group for AR-15 - view 1
Palmetto State Armory PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953 - Bolt Carrier Group for AR-15 - view 2
Palmetto State Armory PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953 - Bolt Carrier Group for AR-15 - view 3
Palmetto State Armory PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953 - Bolt Carrier Group for AR-15 - view 4
Palmetto State Armory PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953 - Bolt Carrier Group for AR-15 - view 5
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Palmetto State Armory

Overview

The PSA AR-15 Bolt Carrier Group is designed for the 5.56 NATO caliber and features a full-auto style, making it suitable for semi-automatic and full-automatic configurations. The nitride finish enhances durability and corrosion resistance, which is crucial for maintaining performance in various conditions. This bolt carrier group is commonly found in mid-length gas system builds, providing reliable cycling and improved recoil management for the shooter.

Specifications

MPN516446953
StyleFull-Auto
FinishNitride
Caliber5.56 NATO

Available Merchants(1)

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$9.99 shipping (free over $99)
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$89.99
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October 2026 so far on GunPartPicker

PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953 is the third most added bolt carrier group on GunPartPicker so far in October 2026, behind the Wilson Combat M16 Bolt Carrier Assy 5.56 NATO Polished Black Nitride, with about 9% of all bolt carrier groups added to builds. Up from #4 in September. Builds with this bolt carrier group are mostly chambered in 5.56 NATO (86%), split between mid-length (45%) and carbine-length (36%) gas systems, and nearly all AR-15.

Today the one retailer we track has it in stock. Buying today, the lowest price is $89.99 at Palmetto State Armory.

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Frequently Built With

The part most often added in each category by hundreds of builds that include this one

Breek Arms AR-15 Warhammer MOD2 Ambidextrous Charging Handle Black

Breek Arms AR-15 Warhammer MOD2 Ambidextrous Charging Handle Black

Charging Handle$50in 15% of them
PSA AR-15 Upper 5.56 16" Mid-Length Nitride 13.5" M-LOK - 5165448513

PSA AR-15 Upper 5.56 16" Mid-Length Nitride 13.5" M-LOK - 5165448513

Upper Receiver$250in 8% of them
Wilson Combat AR-15 Lower Receiver Forged

Wilson Combat AR-15 Lower Receiver Forged

Lower Receiver$52in 9% of them
CMMG AR-15 Mil-Spec Trigger KIT

CMMG AR-15 Mil-Spec Trigger KIT

Trigger$29in 7% of them
Magpul AFG-2 Angled Fore Grip - Black

Magpul AFG-2 Angled Fore Grip - Black

Foregrip$24in 12% of them
Magpul MOE K2 Grip Polymer Gray

Magpul MOE K2 Grip Polymer Gray

Pistol Grip$15in 5% of them

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

100%
AR-15100%

Caliber

85.6%
5.56 NATO85.6%
300 Blackout7.1%
.223 Wylde5.3%
9mm0.8%
7.62x39mm0.3%
Other1.2%

Gas System

45.1%
Mid-Length45.1%
Carbine36.4%
Pistol11.4%
Rifle7.1%

Builds Featuring This Part

See all 30 →

Builds in the community that include the PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953

BuildPartsTotal
my 5.56 build build
my 5.56 build		21$823.81
For nothing in particular 16" build
For nothing in particular 16"		18$643.34
Second 5.56 build build
Second 5.56 build		20$796.75
My 5.56 build build
My 5.56 build		14$1034.88
Aero Precision 16" 5.56 build
Aero Precision 16" 5.56		15$927.03
battle arms 11.5" 5.56 build
battle arms 11.5" 5.56		23$1945.12
aero precision 16" build
aero precision 16"		14$779.13
PSA 14.5" build build
PSA 14.5" build		13$910.36
home defense 16" 5.56 build
home defense 16" 5.56		8$933.93
16" build build
16" build		8$521.98
16" build build
16" build		8$447.71
PSA 16" 5.56 build
PSA 16" 5.56		12$502.92

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