• Chamber – 6.5 Grendel (Compound Throat (SAAMI Spec) .136 Bolt Face
• Profile – Heavy Barrel
• Barrel Twist – 1×8, Air Gauged
• Barrel Thread – 5/8×24
• Barrel Steel – 416R Stainless Steel
• Flash Hider – A2
• Handguard – 15” 5th Axis MLOK Free Float
• Gas Block – .750 Hunter Gas Block
• Gas System – Rifle
• Upper Receiver – M4 Flat-Top Upper
• Bolt Carrier Group – Included
• Charging Handle – Included

Warranty: 1 year warranty against manufacturer defect.

***Ammunition Notification***JSE Surplus test fires every custom upper to verify cycling. We do not guarantee cycling with all ammunition due to vast differences in the quality of ammunition. We will only warranty cycling with US made ammunition. We will not warranty cycling with imported, steel cased or reloaded rounds.