The Reaper Comes Out After Dark.
This 18" 6mm ARC precision barrel is part of our RTR (Ready to Rock) lineup and built within the After Dark Series — our nitrided 4150 Chrome Moly Vanadium (CMV) line designed for hard use, suppressed shooting, and real-world application.
Precision button rifled from match-grade 4150 CMV steel, each barrel is bead blasted and salt bath nitrided for enhanced durability, corrosion resistance, and a deep black, low-glare finish.
The Reaper contour follows a constant taper from breech to muzzle, inspired by the M110 profile, while integrating a Type A mount to properly host the AEM5 or AEM5k.
It will also run the OCM5 and OCM6.
Because around here, the AEM5 gets the love it deserves.
Blacked out. Suppressor-ready. Built for the night shift.
- Length: 18"
- Chamber: 6mm ARC
- Gas System: Rifle Length (Gas Tube Included)
- Twist: 1:7
- Weight: 46 oz
- Profile: Mk12 Mod 1 / .750 Gas Block Journal / Reaper Contour
- Feed Ramps: Enhanced / Enlarged
- Blank: Match Grade Button Rifled Stainless
- Finish: Nitride (After Dark Series)
- Threads: 5/8x24
- Crown: 11° Target Crown
- Suppressor Compatibility: AEM5, AEM5k, OCM5, OCM6, Any Type A
-The muzzle is threaded 5/8x24 and will also accept any compatible direct-thread suppressor for 6mm Caliber
AEM5 Mounting Configuration
For proper fitment with the AEM5, we use:
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Long-thread muzzle brakes
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Mod 0 (short) collars
This is the setup we run and recommend.