The PTR 91 GIR is the GI variant with a rail-equipped handguard replacing the standard polymer. The SAS/HK21 style rail handguard accepts optics mounts, flashlights, and accessories without permanent modification to the receiver. Otherwise identical to the GI in action, barrel length, and magazine compatibility. Type: Rifle Action: Semi-Automatic Caliber: 7.62x51mm NATO Capacity: 20 Year introduced: 2006, USA Weight: 182 oz Overall length: 40.2" Status: Active Intended use: sporting, tactical