USED FAB Defense M4 Collapsible Buttstock w/ Shock Absorber for SAIGA - Joint Black FX-M4SAIGASB. This buttstock features built-in sealed batteries compartment. FAB Defense Buttstock provides an optimum use of optics. With its' high-strength and excellent service the FAB Defense M4 Buttstock is a great choice in buttstocks and is designed for superior positing and tactical performance. Specifications for FAB Defense M4 Collapsible Buttstock for SAIGA (Joint): Manufacturer: FAB Defense Color: Black Gun Model: Saiga Gun Type: Rifle Features of FAB Defense M4 Collapsible Buttstock for SAIGA (Joint): 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 Package Contents: FAB Defense M4 Collapsible Buttstock for SAIGA (Joint) What firearm models does the manufacturer say FAB Defense M4 Collapsible Buttstock for SAIGA (Joint) is compatible with? The manufacturer says that FAB Defense M4 Collapsible Buttstock for SAIGA (Joint) is compatible with SaigaFAB Defense M4-SAIGA SB-B: M4 Collapsible Buttstock w/ Shock Absorber for SAIGA - Joint Black