The UAS-ZAS P Buttstock replaces the original Zastava stock with a slim side folding stock with built in Cheek Rest for optimal use with optics. Advantages: Non slip Buttpad design for superior shoulder positioning and tactical performance Integrated quick detach sling swivel connectors on both sides Built-in adjustable cheek rest with 5 height levels Locking is released by the push of a button Spring lock on folded position, opens by a simple pulling motion and locks Left folding stock by default Available in black, olive drab green, or desert tanCompatibility: Zastava (Yugo) M70 B1, B3 / M77 B1 Models.