The NOXs™ Billet is to upper receivers what the HMMV is to sport utility vehicles. Designed from the drawing board up as a high performance platform, the manufacturing and features are a wish list for the perfect rifle or carbine.
The upper receiver is CNC machined from a solid billet of 7075-T6 aluminum to Seekins Precision exceptional standards, far exceeding mil-spec requirements. The receiver and included NOXs™ Hand Guard top rails are seamless, providing monolithic receiver performance and maximum optics and accessory mounting options. Both the receiver and hand guard are Type III Class 2 Hardcoat Anodized matte black.
Extremely lightweight and infinitely adaptable because of the MLOK attachment system, the included NOXs™ hand guard is perfect for tactical and competition use. Precision machined from 6061-T6 aluminum, it features a seamless top Picatinny rail and MLOK slots at 3, 6 and 9 O’clock positions for solid mounting of accessories where needed.
NOXs™ Billet come standard with a match grade barrel in .223 Wylde. Unlike conventional upper receivers, the NOXs™ Billet gas system can be finely tuned for performance and reliability because of the included Seekins Precision Adjustable Gas Block. The gas block and Mid-Length Gas Tube are Melonite coated for reliability and ease of maintenance. Seekins highly effective Melonite coated Nest Flash Hider is also included. (LATEST REVISION, ROOK PICTURED IS DISCONTINUED AND OLDER MODEL)
NOXs™ Billet uppers are compatible with MIL-SPEC lower receivers and most aftermarket rail systems.
- CNC Machined from solid 7075-T6 Billet aluminum
- Aggressive, unique design lines only offered on Seekins Precision Billet uppers
- M4 Feed Ramps
- MIL-SPEC Full length 1913 picatinny top rail that allows seamless mounting with handguard
- Type III Class 2 Hardcoat Anodized Finish
- Match Grade 16" Barrel
- The .223 Wylde chamber takes advantage of .223 Remington accuracy while still able to safely and accurately shoot the higher pressure 5.56mm NATO ammunition.
- Melonited Adjustable Gas Block, Mid-Length Gas tube and M16 Bolt Carrier Group
- Latest Nest Flash Hider
- 5 Machined in Anti-Rotation QD sling mounts
- Scalloped rails to remove all sharp edges for comfort