CMMG AR-15 Pistol Length Receiver Extenson
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CMMG
Overview
The CMMG AR-15 Pistol Length Receiver Extension is designed as a carbine buffer tube, providing the necessary support and compatibility for your AR-15 pistol build. This buffer tube is specifically optimized for use with a pistol gas system, which plays a crucial role in ensuring reliable cycling and function, particularly when chambered in 300 Blackout. You’ll often find this component in builds focused on compactness and maneuverability, ideal for those looking to enhance their tactical setups.
Specifications
Available Merchants(7)
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Price Alert
September 2026 on GunPartPicker
CMMG AR-15 Pistol Length Receiver Extenson ranked #38 of the 49 buffer tubes builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #50 of the 64 buffer tubes builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today 5 of the 7 retailers we track have it in stock. It dipped to $45.35 at BattleHawk Armory for a stretch in September 2026, under its usual $48.99 to $53.06, so sales do come around. Buying today, the lowest price is $50.49 at Ammunition Depot, above September's low of $45.35, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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