PTR Industries PTR-113: PTR-91 GIRK in .308 Winchester. This particular model features a 16\" barrel, welded scope mount, 5/8X24 barrel threading with removable flash hider, paddle magazine release, (1) 20 round magazine. Black receiver finish with limited edition green furniture. Accepts all HK-91 and G-30 Rifle Mags. Note: PTR utilizes a mix of new production parts and, when available, surplus parts.