The Stag 15 300 Blackout pistol is designed around the ideal length barrel for sub-sonic and super-sonic shooting, suppressed or unsuppressed. This package features an 8 inch 1:7 twist QPQ Nitride barrel, 30 caliber A2 birdcage flash hider, and Stag Arms Slimline 7" M-LOK Handguard. Every complete AR15 Other from Stag Arms comes with a Transferable Lifetime Warranty and an Infinite Shot Barrel Guarantee.