GUIDE FOR THREADED RIFLES AND SHOTGUNS

This Guide is for Thread-On Muzzle Brakes which have internal threading for your threaded barrel.  All Grizzly Gunworks Rifle and Shotgun Thread-On Muzzle Brake styles install the same.  Thread-On Muzzle Brakes come with two bolts.  Thread-On LITE Muzzle Brakes come with a precision hex jam nut.  (LITE Muzzle Brakes have their own install guide).  Please read the following before attempting to install or use your Thread-On Muzzle Brake.  Below are examples of different styles of Thread-On Muzzle Brakes.


Grizzly Gunworks currently offers the following Rifle and Shotgun Thread-On Muzzle Brake STYLES:


- Defcon 1 - Recon - Ghost Protocol - Hunter with Long Spikes - Hunter with a Flat Face -

How to Install a Grizzly Gunworks Thread-On Muzzle Brake?

ALL THREAD-ON MUZZLE BRAKE STYLES INSTALL AND REMOVE THE SAME.

(Follow the SAFETY RULES at all times) 

1.  Make sure the firearm is unloaded. 

2.  Remove the bolt and magazine from the firearm.

3.  Align the muzzle brake with the barrel, and thread it on as far as possible.

4.  When the muzzle brake stops turning, back it off counter clock wise to level or time the muzzle brake.

5.  Position the GGW and caliber marking at the bottom.  The bolt heads should be facing upwards.

6.  Blue Loctite or removable thread locker can be used, however, it is not necessary on thread-on muzzle brakes.

7.  Tighten the two fastening bolts to 60 inch pounds.  

** Note: Tighten the bolts gradually, back and forth, and work your way up to 60 inch pounds. Please DO NOT tighten one bolt to 60 and then the other to 60, you have to alternate the bolts while tightening. ** 


​BEFORE TEST FIRING DO THE FOLLOWING:


(​Follow the SAFETY RULES at all times)

1.  Make sure the firearm is unloaded.

2.  Since your bolt is removed, look through the barrel to make sure it is free from obstruction.

3.  Make sure the muzzle brake bolts are torqued to 60 inch pounds.

4.  Make sure the ammunition you are using, the caliber marked on your firearm and the marking on the bottom of your muzzle brake are all matching.

5.  Always wear ear and eye protection during firing.


HOW TO REMOVE A GRIZZLY GUNWORKS THREAD-ON MUZZLE BRAKE FROM YOUR FIREARM?


(​Follow the SAFETY RULES at all times) 

1.  Make sure the firearm is unloaded.

2.  Remove the bolt and magazine from the firearm.

3.  Loosen the fastening bolts.

4.  Remove the muzzle brake.


​SAFETY RULES:

  • Make sure your firearm is not loaded.
  • Always have the muzzle pointed in a safe direction. 
  • Do not place your finger on the trigger or on the trigger guard.
  • Prove your firearm is safe.  Remove the bolt and/ or magazine.
  • Always be aware of your target and surrounding area. 

WARNING:

GRIZZLY GUNWORKS assumes no responsibility for any injury or property damage resulting from improper or careless handling, intentional or accidental discharge of the firearm.


GRIZZLY GUNWORKS assumes no responsibility for any damage or injury whatsoever occurring in connection with, or as the result of faulty, non-standard, re-manufactured, hand-loaded ammunition or cartridges other than those for which the firearm was originally chambered.


Make sure that the ammunition being used matches the caliber that is marked on the side of the barrel and/ or action, as well as, the caliber that is marked on the bottom of your muzzle brake.


GHOST PROTOCOL Thread-On Muzzle Brake, coated in Gold Cerakote - available for threaded rifles.

GHOST PROTOCOL Thread-On Muzzle Brake, coated in Gold Cerakote - available for threaded rifles.