CMMG AR-15 A1 Stock KIT W/ Receiver Extension
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CMMG
Overview
The CMMG AR-15 A1 Stock Kit with Receiver Extension is a complete assembly designed for builders looking to create a fixed stock setup on their AR-15 platform. Featuring a rifle buffer tube type and an A1 tube specification, this polymer stock provides a durable and lightweight option for your build. This kit is commonly used in builds featuring a rifle gas system and chambered in 5.56 NATO, making it a suitable choice for those aiming for a classic and reliable configuration.
Specifications
August 2026 on GunPartPicker
CMMG AR-15 A1 Stock KIT W/ Receiver Extension ranked #61 of the 204 stocks and braces builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since June 2026. All time, it ranks #95 of the 427 stocks and braces builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 5 of the 9 retailers we track have it in stock. It dipped to $76.46 at AT3 Tactical for a stretch in August 2026, well under its usual $84.96 to $89.95, so sales do come around. Buying today, the lowest price is $82.99 at Primary Arms, above August's low of $76.46, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
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Frequently Built With
The part most often added in each category by the 6 builds that include this one
PSA PA15 Complete Classic EPT A2 Lower Receiver - 7781023
Geissele Automatics B-Grf Geissele Rapid Fire Trigger
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers
Aero Precision AR-15 5.56 BCG W/C158 Bolt - Aero Logo - Phosphate
Hogue AR-15 OverMolded Pistol Grip - Beaver Tail - No Finger Grooves - Black
Colt 11.5" Complete Upper w/ FSB and Doublestar 7" Quad Rail - USED - POLICE TRADE IN
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.
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
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