9MM 1/2 x 28 Threaded barrel protector. It is machined from US made steel to very high quality standards on CNC lathes in my shop. It has a durable black oxide finish. It is counter bored to accommodate barrels that are not undercut at the shoulder.
Length is .460″
Outside diameter is .640 With a clean crisp knurl.
Fits Lone Wolf Aftermarket Threaded Barrels and other brand with a 1/2 x 28 thread.
For Glock models 17 19 26 34 and many others
Please confirm your thread size before ordering.