Rival Arms Mag Baseplate compatible with Glock 9mm/40 S&W/357 Sig Black RA. 357 Sig .40 S&W modelsAdded weight aids in the quick ejection of spent magazines for more efficient reloads. CNC milling produces more accurate parts more consistent results and greater reliability. Every piece is hand checked for quality. Limited Lifetime Warranty Specifications for Rival Arms Mag Baseplate compatible with Glock 9mm/40 S&W/357 Sig: Manufacturer: Rival Arms Color: Black Gun Make: Glock Gun Model: SIG Sauer Pro Country of Origin: USA Package Contents: Rival Arms Mag Baseplate compatible with Glock 9mm/40 S&W/357 Sig What firearm models does the manufacturer say Rival Arms Mag Baseplate compatible with Glock 9mm/40 S&W/357 Sig is compatible with? The manufacturer suggests that Rival Arms Mag Baseplate compatible with Glock 9mm/40 S&W/357 Sig is compatible with SIG Sauer ProRival Arms RA-RA70G001A: Mag Baseplate compatible with Glock 9mm/40 S&W/357 Sig Black