
FN 15 Upper Receiver 20-inch
FN 15 Upper Receiver Assemblies are meticulously built in FN’s Columbia South Carolina manufacturing facility alongside US Military contract M4 rifles. Each upper receiver is supplied with and M16-style Bolt Carrier Assembly with properly staked gas key and Carpenter 158 Magnetic Particle Inspected (MPI) bolt, charging handle and FN’s venerable cold hammer-forged barrel.
FN 15 Upper Receiver 20-inch Specifications:
- Barrel Profile M16 style.
- Rifle-length gas system.
- A2 front sight post.
- Two-piece, single heat shield, oval hand guard.
| Barrel Length | 20 |
|---|---|
| Caliber | 5.56 |
| Condition | New in Box |
| Finish Per Color | Black |
| Manufacturer | FN |
| Manufacturer Part Number | 36427 |
| Model | Rifle Upper |
| Type | Uppers |
| UPC | 845737005986 |
Buying a rifle online in Texas
This rifle ships to your chosen Texas FFL, where you complete Form 4473 and the dealer runs the NICS check. Buyers must be 18; the state sets no waiting period, no registration and no magazine limit. Any centerfire is legal for whitetail, rimfire is not, and feral hogs on private land need no license at all. Our guide to Texas hog and deer rifles matches calibers to the country you hunt. Confirm the season in the TPWD Outdoor Annual.



![FN FN REFLEX XL MRD [BLK]](/wp-content/uploads/2025/03/6786bbbaf055a4a05ebf0c0aa3cde2dff8e429547d3bd.jpg)