Sig Sauer 8900160 P320 9/40/357 Custom Works Fire Control Unit w/Skeletonized Gold Trigger BladeThe Sig Sauer P320 Custom Works Fire Control Unit is a high-performance, customizable component designed for the P320 platform. Compatible with 9mm, .40 S& W, and .357 SIG calibers, this Sig Sauer 8900160 fire control unit offers precision and reliability for serious shooters. It features a skeletonized gold trigger blade, adding both style and improved trigger feel. Ideal for those seeking to personalize and upgrade their P320, the Custom Works Fire Control Unit provides a durable and customizable foundation for building a top-tier handgun. Sig Sauer P320 9/40/357 Custom Works Fire Control Unit w/Skeletonized Gold Trigger Blade 8900160