The PTR GIR is a 7.62x51mm semi-automatic rifle that modernizes the classic H&K G3 design while retaining its battle-proven roller-delayed blowback system. Featuring an 18" match-grade barrel with a 1:10 twist rate, the GIR provides superior long-range accuracy and ballistic performance compared to the 16-inch barrel of the GIRK, making it better suited for precision shooting. The barrel is threaded (5/8x24) for suppressor or muzzle device compatibility and comes with a G3-style flash hider. Built on a stamped steel receiver with a welded Picatinny rail, the GIR allows for optics mounting while maintaining the durability of the original design. It includes H&K-style iron sights, featuring a rotating rear drum and a hooded front post for precise targeting. The fixed polymer stock ensures stability, whereas the GIRK offers a shorter overall length for better maneuverability in confined spaces. Both models include an SEF-style trigger group, a paddle and push-button magazine release, and a polymer handguard for heat resistance. The GIR, weighing approximately 9.5 lbs, is optimized for long-range engagements, while the lighter and more compact GIRK is better suited for dynamic environments. Made in the U.S., the PTR GIR is an excellent option for those seeking a high-quality, full-length battle rifle.