Griffin Armament HEDP Barrels

There is a mental and physical checklist that shooters should run through before running their rifle suppressed. First off, do you have a suppressor? Great, one major hurdle down. Next in line should be preparing your host weapon for its new role as a silenced blaster. Concentric muzzle threading and for the Ar15 platform, proper gas mitigation is at the top of the list. Supppressor manufacturer Griffin Armament has solved these issues and more with the release of their HEDP suppressor-ready barrels.

The Griffin HEDP™ Barrels provide High Endurance Dual Purpose functionality- offering high durability and precision accuracy. Nitrided 416R stainless steel provides the highest possible hardness and longest throat life available with match grade bore dimensions and bore finish. HEDP barrel bores are hand lapped, ensuring batch to batch consistency and accuracy. TRUE-BORE™ concentric suppressor grade threads provide an optimized thread interface for your silencer regardless of brand or model. M4 feed ramps and chambers are polished prior to nitriding for smooth reliable feeding, chambering, and extraction. Gas ports were carefully engineered to provide reliable function suppressed or unsuppressed with 5.56 NATO ammunition. M4A1 contour diameter between the chamber and gas block for minimal POI shift with suppressors and maximum accuracy and durability while maintaining field weight. The included 416R Low profile Griffin Armament Primo gas Block™ offers unmatched value in the interest of increased customer satisfaction. Threads are slotted for pinning and welding your favorite Griffin Armament muzzle device.

• 416R SS barrel manufactured from stress relieved certified barrel steel
• Black nitrided for extended service life
• Magnetic particle inspected
• Button rifled
• 223 Wylde chamber for optimal accuracy
• Mid length gas for softer recoil characteristics
• .750″ gas block journal
• M4A1 diameter for reduced POI shift / Increased Accuracy & Durability
• Air gauged and hand lapped bore
• Polished chamber and M4 feed ramps
• TRU-BORE™ suppressor quality threads
• Suppressor optimized gas ports
• .625″ , 1/2×28 industry standard threads
• threads pre slotted for pin and weld applications
• Included 416R Low Profile PRIMO Gas Block™