SIG SAUER FCU 320 Frame – Semi-Auto Black Fire Control Unit

Elevate your firearm customization with the SIG SAUER FCU 320 Frame. This semi-auto black fire control unit is expertly designed to accommodate 9mm, .40 S&W, and .357 SIG platforms, offering the ultimate in versatility. Crafted by the renowned Sig Sauer, this stripped style frame features no thumb safety, providing a clean slate for your custom build. Weighing in at just 0.7 lbs, it's both durable and lightweight. Perfect for enthusiasts aiming for a personalized shooting experience, the SIG SAUER FCU 320 Frame is the foundation for a reliable and high-performance handgun.