FMK AR15 POLYMER LOWER RECEIVER BLK
$31.88
The FMK AR15 Polymer Lower Receiver in black is a top-tier choice for builders and enthusiasts aiming to enhance their AR-15 rifle. Constructed from advanced polymer materials, it offers exceptional durability while significantly reducing weight, making it ideal for a lightweight, high-performance platform. Trust FMK Firearms’ reputation for quality as you upgrade your firearm with this innovative lower receiver.
170 in stock
FMK Firearms AR-15 Lower, Semi-automatic, Black Finish, Polymer FMKGAR1E
| Weight | 0.438 lbs |
|---|---|
| Dimensions | 8.750 × 4.500 × 2.250 in |
| Manufacturer | FMK Firearms Inc. |
| Action | Semi-Automatic |
| Finish | Black |
| Frame Material | Polymer |
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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