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Adapts a M9x.75 threaded barrel to a 1/2-28 threaded muzzle device.This is the Accuracy Enhancing GSG 1911 adapter. This Adapter is designed for BOTH GSG 1911 and SIG 1911.Material: High-Quality Carbon Steel (Black)
For MORE Material Options:
Stainless Steel-RAW: AD-22-002-S
Barrel Threads (Internal/Female): M9x.75Muzzle Device Threads (External/Male): 1/2-28Clearance Bore Diameter: 0.323"Outer Diameter (O.D.): 0.572”Overall Length: 1.183”Shoulder Diameter: 0.600"Material: High-Quality Stainless SteelFinish: Black