Barrel screw cutting, threading and crowning By JR Firearms

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Barrel Threading / Screw Cutting & Crowning
Barrel Shortening Service.

We are able to offer all types of barrel threading / muzzle screw cutting for sound moderators and muzzle brakes. Our threads are cut on a lathe not a die, and are concentric to the bore to provide an accurate and safe mounting point for any muzzle device. Finally, after threading, an 11 degree target crown is cut.

Any thread configuration can be cut, but depending on the rifle and its use we commonly use 1/2" UNF, 5/8" UNF and M18 x 1.

Barrel Threading Service including shortening and crowning if required. £90

For an additional cost we can also supply a thread protector with either a knurled finish, or the smooth "invisible" type.

Thread cap from £40

Barrel re-crowning only £50

The Barrel Screw Cutting / Muzzle Threading Process

Barrel mounted and dialed in.

Barrel turned down ready for threading.

Barrel threading.

Barrel screw cutting.

Barrel threaded ready for crowning.

Barrel crowned to 11deg. target crown

Rifle threading.

Rifle Screw cutting.

Just a couple of examples of our muzzle screw cutting service.

This picture shows one of our invisible end caps.

Invisible end cap.

We can manufacture practically any thread cap that you may require.

Lightly knurled end cap.

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