Infinite Product Solutions SIG Sauer/GSG .22LR 1911 to Conversion Adapter Black. 22LR 1911 to 1/2-28 Conversion Adapter from Infinite converts your smaller M9 x .75 threads to US industry standard 1/2-28 unlocking your barrel's potential with the ability to mount a variety of muzzle devices. Precision manufactured from durable steel with a black oxide finish this adapter ensures reliable performance and a secure fit. Enhance your firearm's versatility with this essential accessory from Infinite. Specifications for Infinite Product Solutions SIG Sauer/GSG .22LR 1911 to 1/2-28 Conversion Adapter: Manufacturer: Infinite Product Solutions Color: Black Finish: Oxide Fabric/Material: 4140 Steel Threads per Inch: 1/2x28 Gun Make: ATI SIG Sauer Gun Model: ATI GSG 1911 SIG Sauer 1911 Weight: 0.96 oz Last Chance: Yes Height: 0.61 in Width: 0.61 in Length: 1.31 in Caliber: .22 Hornet Gun Type: Pistol Features of Infinite Product Solutions SIG Sauer/GSG .22LR 1911 to 1/2-28 Conversion Adapter Convert tiny M9 x .75 threads to suppressor-ready 1/2-28 threads Unlock your barrel's potential with the ability to mount a variety of muzzle devices Precision manufactured Ensures reliable performance Secure fit Enhances firearm versatility Package Contents: Infinite Product Solutions SIG Sauer/GSG .22LR 1911 to 1/2-28 Conversion Adapter x1 Thread Protector What firearm models does the manufacturer say Infinite Product Solutions SIG Sauer/GSG .22LR 1911 to 1/2-28 Conversion Adapter is compatible with? The manufacturer says that Infinite Product Solutions SIG Sauer/GSG .22LR 1911 to 1/2-28 Conversion Adapter is compatible with SIG Sauer 1911 ATI GSG 1911Infinite Product Solutions GSG-1228-BS: SIG Sauer/GSG .22LR 1911 to 1/2-28 Conversion Adapter Black