CMMG Receiver Extension A1
$40.30
The CMMG Receiver Extension A1 is a genuine M16A1 buffer tube made to mil-spec dimensions. Upgrade your AR-15 build with this reliable component.
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Description
Receiver Extension A1
Additional information
| Weight | 0.230 lbs |
|---|---|
| Dimensions | 12.450 × 6.850 × 1.200 in |
| Manufacturer | Cmmg Inc. |
| Finish | Anodized |
| Weight | Lightweight |
| Material | Aluminum |
| Dimensions | Standard |
| Compatible With | unknown |
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About brand
BT Gun Company carries Cmmg Inc. handguns, parts and parts kits, rifle magazines, and barrels. Options include the Banshee Mk4 handgun in .300 BLK, the ZEROED Pistol Grip Kit, AR-15 hammer assemblies, 350 Legend AR-15 magazines, Auto Sear Trip Kits for .22 AR conversions, and barrel and BCG kits in 5.7x28mm.
Shipping and Delivery
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.

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