buddykermit 16 Posted March 25, 2012 Report Share Posted March 25, 2012 74 style break - is there a "correct" variation for the 7.62? i want to swap out my slant for a correct 74 style (not tapco). i understand ill have to switch out the front sight for one that has 24mm threads? ive seen bulgarian zigzag ones but those are really only made for 5.45 and are modified for 7.62 correct? also is there a russian one as id rather throw on a russian part over another counrty Quote Link to post Share on other sites
m1lk 26 Posted March 27, 2012 Report Share Posted March 27, 2012 (edited) the proper ak103 brake is made by either krebs or ak-usa. i have had both, the krebs isnt chrome lined, the one by ak-usa is. i sold the krebs one with a rifle. i currently have an ak74 by ak-usa with the brake. i highly reccomend it. Edited March 27, 2012 by m1lk 1 Quote Link to post Share on other sites
semper299 284 Posted March 27, 2012 Report Share Posted March 27, 2012 I have a Bulgy FSB and Bulgy Zig Zag Chrome lined 74 brake on my 7.62. Works fine. Quote Link to post Share on other sites
hutchsaiga 93 Posted March 31, 2012 Report Share Posted March 31, 2012 (edited) I have a Bulgy FSB and Bulgy Zig Zag Chrome lined 74 brake on my 7.62. Works fine. I bored mine out for the sake of safety. But mine Also works great Edited March 31, 2012 by hutchsaiga Quote Link to post Share on other sites
shades_of_grey 1,092 Posted March 31, 2012 Report Share Posted March 31, 2012 K-Var also makes a non-chromed 74-type brake of the correct design for 7.62x39. They're a bit cheaper than the AK-USA brake. I've got the K-Var 74-type brakes on a few of my safe-dwelling 7.62x39s and an AK-USA brake on my go-to rifle. Quote Link to post Share on other sites
Lone Eagle 839 Posted April 1, 2012 Report Share Posted April 1, 2012 Buddykermit, you won't need to change your FSB. CNC Warrior makes a 14mm to 24mm adapter, and now makes a 24mm to 14mm version. I can't remember where, but I did see a Bulgy 74-style in 14x1mmLH. May have been CNC Warrior as well. Quote Link to post Share on other sites
Gh()st 3 Posted May 5, 2012 Report Share Posted May 5, 2012 I have a Bulgy FSB and Bulgy Zig Zag Chrome lined 74 brake on my 7.62. Works fine. I bored mine out for the sake of safety. But mine Also works great What size bit did you use to open it up? I have a '74 style I'd like to do the same on. Quote Link to post Share on other sites
themadhatter196 18 Posted May 5, 2012 Report Share Posted May 5, 2012 I measured the clearance on a 74' muzzle brake for the 5.45 bullet (.221 inches) and then calculated what the equivalent clearence for the 7.62 (.310 inches) round would be. This magic number is .427 inches in diameter, so roughly a 7/16 drill bit (.437). Although Im sure you would be safe going down the next size in bits. Quote Link to post Share on other sites
Gh()st 3 Posted May 5, 2012 Report Share Posted May 5, 2012 Perfect. Thanks for the measurement! Quote Link to post Share on other sites
themadhatter196 18 Posted May 6, 2012 Report Share Posted May 6, 2012 no prob Quote Link to post Share on other sites
semper299 284 Posted May 8, 2012 Report Share Posted May 8, 2012 I measured the clearance on a 74' muzzle brake for the 5.45 bullet (.221 inches) and then calculated what the equivalent clearence for the 7.62 (.310 inches) round would be. This magic number is .427 inches in diameter, so roughly a 7/16 drill bit (.437). Although Im sure you would be safe going down the next size in bits. When you bored your brake out, did the chrome lining survive or did it chip off? Quote Link to post Share on other sites
Potus2000 7 Posted May 9, 2012 Report Share Posted May 9, 2012 Anybody have any thoughts on the Arsenal brake? I got one but haven't completed my build yet so haven't shot it. Quote Link to post Share on other sites
themadhatter196 18 Posted May 9, 2012 Report Share Posted May 9, 2012 The small areas affected by the drill did remove the chrome (chrome is a very thin lining) I haven't painted it and it hasn't rusted so Im happy. Quote Link to post Share on other sites
semper299 284 Posted May 10, 2012 Report Share Posted May 10, 2012 The small areas affected by the drill did remove the chrome (chrome is a very thin lining) I haven't painted it and it hasn't rusted so Im happy. Yeah, I don't think that is a big issue either so I am not too worried about it. You have convinced me to bore mine out, so I dropped it off with a buddy of mine that has the proper equipment. I told him to take it out to .400. Quote Link to post Share on other sites
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