A
AWright_87good not perfect
Reviewed on May 16, 2026Verified with Build
works great. wish the finish was matte instead of glossy
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Aero Precision AR-15 5.56 BCG W/C158 Bolt - Aero Logo - Phosphate
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Aero Precision
Overview
The Aero Precision AR-15 Bolt Carrier Group is designed for 5.56 NATO caliber firearms, featuring a reliable black finish that enhances durability and corrosion resistance. This BCG is engineered to work seamlessly with various upper receivers, ensuring smooth cycling and optimal performance in your build. It's commonly found in mid-length gas system configurations, making it a solid choice for builders looking for reliability and consistency in their setups.
Specifications
MPNAPRH100019C
Caliber5.56 NATO
FinishBlack
Available Merchants(7)
Prices checked
Stock Alert
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August 2026 on GunPartPicker
Aero Precision AR-15 5.56 BCG W/C158 Bolt - Aero Logo - Phosphate was the second most added bolt carrier group on GunPartPicker in August 2026, behind the Bravo Company M16 Bolt Carrier Group Black, with about 7% of all bolt carrier groups added to builds. That's its 4th straight month at #2. Builds with this bolt carrier group are mostly chambered in 5.56 NATO (78%, then .223 Wylde 12%), split between mid-length (51%) and carbine-length (25%) gas systems, and mostly AR-15 (88%, then AR-10 10%).
It was out of stock everywhere we track for all of August 2026, and today none of the 7 retailers we track has it in stock right now. Listed prices start at $148.99 at KY Gun Company for when it comes back.
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Upper Receiver$129 · out of stockin 93 builds
Aero Precision Stripped M4E1 AR-15 Lower Receiver - Special Edition - Freedom
Lower Receiver$155 · out of stockin 127 builds
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Trigger$335in 156 builds
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Foregrip$24in 152 builds
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Stock & Brace$36in 75 builds
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
87.5%
AR-1587.5%
AR-1010%
AR-92.5%
CaliberBased on real build data showing which calibers builders choose alongside this product.
77.5%
5.56 NATO77.5%
.223 Wylde11.7%
300 Blackout9%
.308 Win0.9%
9mm0.9%
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
51%
Mid-Length51%
Carbine25%
Pistol14.6%
Rifle8.3%
Blowback1%
Builds Featuring This Part
See all 103 →Builds in the community that include the Aero Precision Ar-15 5.56 Bcg W/c158 Bolt - Aero Logo - Phosphate
| Build | Parts | Total |
|---|---|---|
 | 10 | $3693.23 |
 | 9 | $633.36 |
 | 14 | $1017.45 |
 | 13 | $839.89 |
 | 27 | $1946.75 |
 | 12 | $1033.57 |
 | 26 | $4662.41 |
 | 6 | $3850.88 |
 | 13 | $1201.88 |
 | 8 | $697.16 |
| 22 | $1369.05 |
| 29 | $3666.04 |
Customer reviews
4.5out of 5
4 global ratings
Top reviews
Z
zjebstewart11zbuild quality is there
Reviewed on May 16, 2026Verified with Build
cycles smooth right out of the box. carrier finish stays clean longer than my last one
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C
ch3mp3lAero BCG decent
Reviewed on May 7, 2026Verified with Build
C158 bolt, phosphate carrier, runs to spec. extractor spring tension was on the soft side from the factory, ejection was a touch lazy at 5 oclock on M193. swap to an enhanced extractor spring fixed it. for the price point a solid budget BCG
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S
Stanton01Aero C158
Reviewed on March 17, 2026Verified with Build
aero 5.56 BCG with C158 bolt, lockup is positive and the bolt face gauges in spec with my Forster set. phosphate finish is consistent, no thin spots near the gas key. aero logo is etched on the carrier side, subtle but present
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