The M4-Saiga Buttstock replaces the standard stock with a high-grade M16/M4 folding and collapsible buttstock system. Advantages: Non slip design provides superior shoulder positioning enhancing tactical performance Stock manufactured to fit your Saiga stamped receiver Replaces the original stock and operates on original folding mechanism Tough and robust design After market sized 6061 hard anodized aluminum buffer tube Fit any M4 collapsible stock Built-in sealed batteries compartment Integrated quick detach sling swivel connectors on both sides Compatibility: Folding stock Saiga models