Bestiarii Threadless System

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Do you need a muzzle brake system that can be switched between firearms of the same caliber family simply by changing a collet? Do you need to reduce your rifles recoil and muzzle rise by up to 65% and improve accuracy?

Meet the Bestiarii ( Beast-Fighter) The Muzzle Brake.

Collet Nut and Collet Nut Tool are CNC machined from a solid bar of 4140 carbon steel. All parts have been Nitrocarburized case hardened to 70 Rockwell. The collet is made from 440 Stainless Steel. This kit includes everything you need to install our Patent Pending Bestiarii Threadless Muzzle Brake System on one rifle profile. Kit includes 1 Collet Torque Tool , 1 Collet , 1 Collet Nut and 1 Muzzle Brake. Additional collets are sold separately.

The assembled muzzle brake has dimensions of 2.875 long X 1.000 in diameter and weighs 180 grams. Important details for barrel measurement. Please see barrel measurement instruction sheet.

Choosing Muzzle Brake Caliber & Collet Size

IMPORTANT INFORMATION: Before ordering you will need to measure your barrel to ensure the proper collet fit to your rifle. Click on the Barrel Measurement instruction sheet and follow the instructions. Once you have your Barrel Measurements simply find your Rifle Caliber in the Muzzle Brake Caliber Chart. (Example a .300 WSM is muzzle brake III ). In the Barrel measurement chart, choose the collet that corresponds with your Barrel Measurements. 

SELECT YOUR MUZZLE FROM THE DROPDOWN, AND THE COLLET NUMBER THAT CORRESPONDS TO THE BRAKE NUMBER AND SIZE YOU NEED. IF YOU PICK A VERSION II BRAKE YOU NEED A VERSION II COLLET. 

EXAMPLE: .300 WSM with measurements of .628 - .631   

MUZZLE BRAKE SIZE = VERSION III
COLLET SIZE = G-III


Barrel Measurement Instructions - HERE

Muzzle Brake Caliber Chart

 .22 Hornet = 

.222 Remington= I

.223 Remington= I

5.56 Nato I

.22-250 Remington = I

6 mm = I

6 mm Norma-I

.243 Winchester-I

.240 Weatherby Magnum = I

.25-06 Remington = I

6.5 mm GrendelI = I

6.5 X 47 Lapua = I

.260 Remington = I

6.5 X 55 Swedish Mauser = I

6.5 mm - 284 Norma = I

.270 WSM = I

.270 Winchester = I

.270 Weatherby Magnum = II

7 mm- 08 Remington = II

7mm X 57 = II

7mm X 57 R = II

7mm X 64 = II

7mm Remington Magnum = II

7mm Weatherby Magnum = II

.30 Carbine = III

.30-30 Winchester = III

300 Savage = III

.308 Winchester = III 

7.62 X 53 R = III

7.5 X 55 Swiss GP31 = III

.30-06 Springfield = III

.300 H&H Magnum = III

.300 WSM = III

.300 Winchester Magnum = III

.300 Weatherby Magnum = III

.300 Lapua Magnum = III

.300 Remington Ultra Magnum = III

.30-378 Weatherby Magnum = III

7.62 X 39 = III

303 British = III

8 X 57 IS = IV

.338 Winchester Magnum = IV

338 Lapua Magnum = IV

9.3 X 66 Sako = IV

.375 H&H Magnum = V

.444 Marlin = VI

.45-70 Government = VI


Collette Size Chart

Example: If the crown Measurement is .600 and 1inch up the barrel measures .612 you will order Collet A

SKS = .551

A = .600 - .612

B = .660 - .662

C = .551 - .562

D = .620 - .623

E = .584 - .592

F = .569 - .578

G = .625 - .635

H = .574 - .594

I = .632 - .638

J = .604 - .615

K = .622 - .634

L = .770 - .774

M = .750 - .750

N = .722 - .732