It comes standard with an adjustable gas system to tune the rifle to various extreme environments. Capable of functioning in all environments, its rugged, reliable, no-nonsense features make the PAP M77 an excellent excellent addition to your hunting and sporting rifle collection. This model features an original Serbian made handguard made from high quality polymer to provide a combination of comfort and durability. The rifle comes with a polymer collapsible stock to allow for adjustments to be made by the shooter. Also included is the comfortable, ergonomic Magpul MOE grip with storage for batteries, spare parts, or cleaning supplies. A US made 20 round magazine is included as the standard capacity magazine. Specifications and Features: .308 Winchester (accepts 7.62×51 NATO) Semi automatic gas operated system with Adjustable Gas Block Double stack bolt 1.5mm bulged trunnion receiver Cold hammer forged chrome lined barrel 1- 20 Round Magazine Takes Zastava Pattern .308 M77 mags only Bolt hold open notch on safety selector Adjustable front & rear iron sights 8.6 Lbs 19.7″ Threaded Cold Hammer Forged Barrel Magpul Zhukov Folding Stock, MOE Grip, and Hogue handguard