T3 Terminator muzzle brakes are designed for .223 to 338 Magnum cartridges on barrels up to 25mm diameter.
The standard T3 threads are ½ x 28, 9/16 x 24 & 28, 5/8 x 24, 28 & 32, M14, 15, 16, 17, 18, 20 x 1, 11/16 x 24, ¾ x 24 & 28
The T3 doesn’t have a top or bottom, it has flats for a 23mm, 15/16 spanner and a small indexing mark so they can easily be fitted by a Gunsmith.
Ports are 90 degrees to the ground to minimise debris disturbance
The ports are angled back away from the shooter to minimise shooter discomfort and maximise performance.
The standard through holes are for .264 & .308 calibres
It requires opening up to 0.025-0.030″ over bore size when fitted to larger calibres.
It is recommended the rear of the brake be tapered down to the muzzle diameter.
The T3 is 25mm, 0.984” diameter, 69mm, 2.72” long & weighs 85-115 grams, 2.99-4.05 oz depending on thread.
T3 between 308, 7mm Rem Magnum & 338 Lapua Magnum.
T3 on a Proof Research Barrel
T3 with 338 Lapua Magnum with 300 SMK above it
and 300 RUM with 230 Berger below it
T3 on a Christensen arms carbon barrel