T1 Terminator muzzle brakes are designed for .223 to 300 Winchester Magnums on barrels up to 17mm diameter

The T1 Dimensions are,17.2mm, 0.677 ? diameter,  50mm, 1.96 ? long, 35-40 grams, 1.23-1.41 ozs|

The T1 standard threads are:

• 7/16 x 28 for Kimbers.
• M13 x 0.75 &
• M13 x 1.25 for Brownings
• x 28 for custom applications

The standard through hole is for a .224 & requires opening up to 0.025-0.030 over calibre size if used on larger calibres up to a maximum of 30 cal.

The T1 doesn t have a top or bottom, has flats for a 15mm spanner so they can be easily fitted by the Gunsmith. Ports are 90 degrees to the ground to reduce disturbance. The ports are angled back away from the shooter to minimise shooter discomfort and maximise performance.

It is recommended the rear of the brake be tapered down to the muzzlediameter when fitting.