Wilson Combat Sig Sauer WCP320 Magazine Catch Black. Crafted from a fully machined metal for greater durability and reliability it provides quick reloads without compromising the low-profile factory feel. Specifications for Wilson Combat Sig Sauer WCP320 Magazine Catch: Manufacturer: Wilson Combat Gun Make: SIG Sauer Gun Model: SIG Sauer P320 Fabric/Material: Steel Features of Wilson Combat Sig Sauer WCP320 Magazine Catch Precision printed stainless steel with black nitride finish Angled ergonomic surface to ensure positive magazine release Drop in fit Compatible with all Generations of P320 models and variants in 9/357/40 calibers only Package Contents: Wilson Combat Sig Sauer WCP320 Magazine Catch What firearm models does the manufacturer say Wilson Combat Sig Sauer WCP320 Magazine Catch is compatible with? The manufacturer suggests that Wilson Combat Sig Sauer WCP320 Magazine Catch is compatible with SIG Sauer P320Wilson Combat 320-MCK: Sig Sauer WCP320 Magazine Catch Black