The Noveske Chainsaw 5.56 1/2"x28 Threads Rifle has a 16" Stainless barrel with 1:7 twist, and a Low profile gas block, .750" journal, pinned to barrel, 1/2"x28 muzzle threads with an A2 birdcage flash hider. Available in a Hardcoat type III anodizing with Black nitride Noveske marked forward assist. Featuring M-LOK mounting positions every 45 degrees with picatinny 1913 top rail. GEN 4 NSR-15" (M-LOK) Free Floating handguard.