20" Rifle 6mm ARC Medium M-LOK Upper Assembly - 28379
Only 5 left in stock
20″ 6mm ARC Medium Rifle M-LOK Upper Assembly
Engineered for accuracy, built for modern ballistics.
The 20″ 6mm ARC M-LOK Upper Assembly is a purpose-built platform for precision shooting and long-range performance. It features a premium nitrided barrel, rifle-length gas system, and medium contour for optimal harmonics with the 6mm ARC cartridge. Paired with a steel nitrided gas block, American-made M-LOK handguard (style may vary), and forged mil-spec upper, every component is assembled using Permatex 242 and AEROSHELL 33MS for long-term reliability. BCG and charging handle not included. Backed by a Limited Lifetime Warranty and Sub-MOA Guarantee with match-grade ammo.
Specifications
- Barrel Finish: Nitride / Melonite
- Barrel Profile: Medium
- Cartridge: 6mm ARC
- Barrel Length: 20″
- Gas System: Rifle Length
- Twist Rate: 1:7
- BCG / Charging Handle: Not Included
- Handguard: American-Made M-LOK (style may vary)
- Origin: Made in the USA
| Weight | 70 oz |
|---|---|
| Dimensions | 22 × 5 × 5 in |
| Barrel Finish | Nitride / Melonite |
| Barrel Profile | Medium |
| Cartridge Compatibility | 6mm ARC |
| Barrel Length | 20 |
| Gas System Length | Rifle |
| Twist Rate | 1:7 |
| BCG / Charging Handle | Not Included |
| MPN | 28379 |
| UPC | 28379 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
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