I have an Armory USA AK-47 that does NOT take the usual 14mm left hand thread muzzle brake. Instead, it takes a 1/2"x28 thread like the AR-15. Problem is, a 7.62x39 round is larger than .223 so I need to drill the center of the brake for the larger round. I drilled it today to 23/64th's (or just a hair under 3/8th's) but am not sure if that's large enough for a 7.62 round. That hole is slightly smaller than the brake I took off. Incidently, took off a cheap slant-cut brake and installed an AR A2 flash hider.
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Muzzle Brake modification question...
- Thread starter kymasabe
- Start date
cntryboy1289
New member
It has to be large enough to clear a .311" bullet.
Got some down-loads to tryit with?
I'd fire one or two and look for copper on the back side of the break. Make sure no-one else is on the firing line and wear good safety glasses, long sleave shirt and leather gloves.....
It depends on the concentriciy of the holes and the bullet flight path (which may not be too straight until several yards downrange).
-tINY