This Pioneer Arms Hellpup PRO model is a Pioneer Arms x UTG Collaboration TACTICAL Hellpup PRO AK pistol, chambered in 7.62x39. It uses a premium 6061-T6 Aluminum UTG PRO AK Super Slim Drop-In MLOK Handguard, which increases the Hellpup's customizability with American Made durable furniture. The Hellpup PRO Series of AK pistols feature an 11.73" barrel with 14x1LH thread pitch, a forged front trunnion, 90 degree gas block, an enhanced safety selector, and a traditional AK optics side rail. What makes the PRO model different is the 1913 Picatinny rail mounted to the rear trunnion to allow the easy attachment of Pistol Braces.. Combining historic Polish firearms manufacturing legacy, with American Made durable and customizable furniture for the 21st century.