The Dark Moon features a unique cut on the rail. Like it's close relative the Witch Doctor, the Dark Moon features a 1913 Picatinny rail flat with dry lube internal finish. This rifle allows you to explore, change or select a variety of ammunition and will cycle time-after-time. We're happy to let you use it as a foundation for your most advanced accessories, optics and furniture-or keep it a simple workhorse that you grab day in and day out. On the range, in the field, on the ready or in the safe, the high-performing Dark Moon will quickly eclipse even your favorite rifles. - CALIBER 223 REM/5.56MM NATO - MAGAZINE (1) 30rd capacity - BARREL 16" Parkerized M4 Barrel, 1:7 Twist, A2 Flash Hider - RECEIVERS Forged 7075-T6, Type Ill Class II Hard-coat anodized - HANDGUARD Ergonomic Free-Float M-LOK Rail - STOCK M4 6-Position Adjustable