FLUX DEFENSE Raider X P320 3in SBR Collapsible Rifle Stock Black. Specifications for FLUX DEFENSE Raider X P320 3in SBR Collapsible Rifle Stock: Manufacturer: FLUX DEFENSE Gun Make: SIG Sauer Gun Model: SIG Sauer P320 X Color: Black Package Contents: FLUX DEFENSE Raider X P320 3in SBR Collapsible Rifle Stock Compatible Gas Cap What firearm models does the manufacturer say FLUX DEFENSE Raider X P320 3in SBR Collapsible Rifle Stock is compatible with? The manufacturer says that FLUX DEFENSE Raider X P320 3in SBR Collapsible Rifle Stock is compatible with SIG Sauer P320 XFLUX DEFENSE 165-00012: Raider X P320 3in SBR Collapsible Rifle Stock Black