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The Range
Gunsmithing & Repairs
Making a 7.62x39 AR-15 work reliably
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<blockquote data-quote="Owlcreekok" data-source="post: 2975799" data-attributes="member: 30378"><p>Interesting takes on the 7.62 x 39 cartridge in an AR action. I read the OP pasted article some time ago during the gathering stage of the first assembly (pistol). It ran flawlessly. Used a bolt made for the business, ie- not "flimsy".</p><p></p><p>Second gathering resulted in the rifle I have mentioned elsewhere. Shoots into an inch, rather large gas port as required, unmolested "M4" cuts on lower as are the ones on the extension (unmolested). Standard A2/A3 buffer & spring. Using 10 rd mags (I abhor any mag over 20 rds in anything), it will spew them as fast as the action will reset. Any ammo (as thus far tested), any weather.</p><p></p><p>After reading a significant amount on the various boards as concerns the cartridge in an AR, I got the impression that the various experiences / opinions were directly proportional to the varying degree of understanding of what makes an AR tick. Rarely did I read much, if any on the topics of pressures, dwell time, gas port sizes, gas tube/system lengths.</p><p></p><p>I got lucky. Mine all run. The rifle is accurate. The pistol, well, it is, of course, as many things in the gun world, a solution in search of a problem. At least it makes racket. lol</p></blockquote><p></p>
[QUOTE="Owlcreekok, post: 2975799, member: 30378"] Interesting takes on the 7.62 x 39 cartridge in an AR action. I read the OP pasted article some time ago during the gathering stage of the first assembly (pistol). It ran flawlessly. Used a bolt made for the business, ie- not "flimsy". Second gathering resulted in the rifle I have mentioned elsewhere. Shoots into an inch, rather large gas port as required, unmolested "M4" cuts on lower as are the ones on the extension (unmolested). Standard A2/A3 buffer & spring. Using 10 rd mags (I abhor any mag over 20 rds in anything), it will spew them as fast as the action will reset. Any ammo (as thus far tested), any weather. After reading a significant amount on the various boards as concerns the cartridge in an AR, I got the impression that the various experiences / opinions were directly proportional to the varying degree of understanding of what makes an AR tick. Rarely did I read much, if any on the topics of pressures, dwell time, gas port sizes, gas tube/system lengths. I got lucky. Mine all run. The rifle is accurate. The pistol, well, it is, of course, as many things in the gun world, a solution in search of a problem. At least it makes racket. lol [/QUOTE]
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Making a 7.62x39 AR-15 work reliably
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