The PTR 33 KFR is an HK33-pattern rifle in 5.56 NATO with the classic roller-delayed blowback action. Uses standard STANAG magazines. Brings HK33 ergonomics and roller-delayed reliability to the 5.56 NATO cartridge. Type: Semi-Auto Rifle Action: SA Caliber: 5.56 NATO Capacity: 30 Year introduced: 2012, USA Weight: 84 oz Overall length: 38.6" Status: Active Intended use: Tactical, Competition