Barrett M107A1‑S – .50 BMG, 20″ Fluted Barrel, 10+1 Core Specifications Feature Details Caliber .50 BMG Barrel 20″ chrome-lined, fluted, 1:15 twist, threaded with 4-port muzzle brake (suppressed-ready) Operation Recoil-operated semi-automatic Capacity 10 + 1 rounds (steel detachable mag) Weight ≈ 28.7 lb unloaded (12.4 kg) Length ≈ 48″ overall Receiver Lightweight aluminum up... https://www.prime-firearms.com/product/barrett-m107a1-s-fde-50bmg-20-fluted-barrel-101/