CMMG Receiver Extension Kit Carbine AR15
$56.26
The CMMG Receiver Extension Kit Carbine AR15 is essential for completing your custom lower group, pairing seamlessly with your choice of lower parts kit and butt stock. Designed for reliability and performance, this kit provides the foundation for your AR15 build, ensuring a solid and dependable setup for any shooting application.
20 in stock
Combine this kit with your choice of lower parts kit and butt stock to complete your new lower group.
| Weight | 0.625 lbs |
|---|---|
| Dimensions | 14.900 × 4.250 × 2.050 in |
| Manufacturer | Cmmg Inc. |
| Finish | Anodized |
| Material | Aluminum |
| Compatible With | AR15 |
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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