Killer Innovations velocity thread protector is made in the USA. Each thread protector is precision machined with an aggressive textured surface for a tool-less installation and removal and black nitride coated for a durable, long lasting finish. The thread protector extends just past the end of the barrel to help protect the 11° target crown from damage.
Review by Jason H. on 21 Feb 2019review stating Perfect for my Glock 19 barrels
I have these on a Silencer Co, Zev, Lantac and a Battle Arms Development barrels, there all 1/2x28 , I also have one for my Glock 43 Silencer Co barrel. These are not really made for rifles. Excellent quality and craftsmanship.
Review by Tom on 25 Nov 2018review stating Mystery product
This well made and nicely finished, but it's too long for the 3 different brands of pistol barrels that I tried, and too short for the threads on an AR pattern barrel.
Review by Jason H. on 21 Feb 2019review stating Perfect for my Glock 19 barrels
I have these on a Silencer Co, Zev, Lantac and a Battle Arms Development barrels, there all 1/2x28 , I also have one for my Glock 43 Silencer Co barrel. These are not really made for rifles. Excellent quality and craftsmanship.
Review by Tom on 25 Nov 2018review stating Mystery product
This well made and nicely finished, but it's too long for the 3 different brands of pistol barrels that I tried, and too short for the threads on an AR pattern barrel.