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#7147016 - 04/21/18 08:16 AM AR15 help
PSHOT Offline
Tracker

Registered: 10/24/13
Posts: 585
Loc: NW of FTW
I have 3 AR15ís in 5.56. I am considering converting one to 7.62x39 for alittle more punch. Would all I need is a new barrel and magazines? I want the conversion to be cheap as possible.

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#7147021 - 04/21/18 08:21 AM Re: AR15 help [Re: PSHOT]
Chickenman Online   shocked
Chickenless

Registered: 12/15/05
Posts: 4639
Loc: Denton County
Barrel and bolt. You'll want quality mags. That's it. Carrier is the same.
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#7147023 - 04/21/18 08:21 AM Re: AR15 help [Re: PSHOT]
FiremanJG Online   content
THF Celebrity

Registered: 12/16/08
Posts: 25145
Loc: Wolfe City, TX
Need a bolt too.
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#7147050 - 04/21/18 09:21 AM Re: AR15 help [Re: PSHOT]
colt45 Offline
THF Trophy Hunter

Registered: 08/19/06
Posts: 8246
Loc: bastrop county
or you can buy my complete upper
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hold on Newt, we got a runaway

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#7147225 - 04/21/18 01:03 PM Re: AR15 help [Re: PSHOT]
PSHOT Offline
Tracker

Registered: 10/24/13
Posts: 585
Loc: NW of FTW
Thanks for the help

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#7147255 - 04/21/18 01:52 PM Re: AR15 help [Re: PSHOT]
bronco71 Online   content
Bird Dog

Registered: 09/04/07
Posts: 390
Loc: N. Dallas/Sulphur Bluff
be sure to get the enhanced firing pin with the bolt, it strikes slightly deeper to bust the hard Russian primers better....

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#7149363 - 04/23/18 05:12 PM Re: AR15 help [Re: PSHOT]
wall8053 Online   happy
Pro Tracker

Registered: 01/25/12
Posts: 1129
Loc: Mckinney
Also make sure your trigger isn't "light", actually the hammer part, even with an enhanced firing pin you can still get light primer strikes if your hammer spring is too light. It helps to use an extra power hammer spring. Extra insurance to ignite those Russian primers. Just adding on to what has already been mentioned.

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#7149456 - 04/23/18 07:12 PM Re: AR15 help [Re: PSHOT]
RiverRider Online   content
THF Trophy Hunter

Registered: 11/11/07
Posts: 8124
Loc: Wise Co.
I'd take a look at the 6.5 Grendel.
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I'm here to give and receive knowledge, not affirmation or adoration. If you don't like it, mierda dura. Intellectual honesty is not for fragile egos.

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#7149508 - 04/23/18 08:00 PM Re: AR15 help [Re: PSHOT]
Koenig Offline
THF Trophy Hunter

Registered: 11/26/07
Posts: 6184
Loc: Denton TX
Never shot a 7.62x39 AR or any other non 556 case round that didnít run like crap out of an AR15 platform.
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Originally Posted By: SnakeWrangler
never trust a man that rents pigs....

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#7149526 - 04/23/18 08:13 PM Re: AR15 help [Re: Koenig]
bronco71 Online   content
Bird Dog

Registered: 09/04/07
Posts: 390
Loc: N. Dallas/Sulphur Bluff
Originally Posted By: Koenig
Never shot a 7.62x39 AR or any other non 556 case round that didnít run like crap out of an AR15 platform.

I've built quite a few non 556 and 556 AR15's including 4 7.62x39, no problems as long as the correct parts are used, especially the correct bolts and mags. Actually the only 2 that gave me problems were on 556 cases, a 300 BO and a 556. No problems with 458 socom, 6.8 SPC, 300 OSSM, 22LR, etc.

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#7151966 - 04/25/18 05:20 PM Re: AR15 help [Re: PSHOT]
Koenig Offline
THF Trophy Hunter

Registered: 11/26/07
Posts: 6184
Loc: Denton TX
300bo and 556 were probably gas problem. The problem I had with them was feeding or lack of.
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Originally Posted By: SnakeWrangler
never trust a man that rents pigs....

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#7152174 - 04/25/18 08:58 PM Re: AR15 help [Re: Koenig]
bronco71 Online   content
Bird Dog

Registered: 09/04/07
Posts: 390
Loc: N. Dallas/Sulphur Bluff
Originally Posted By: Koenig
300bo and 556 were probably gas problem. The problem I had with them was feeding or lack of.

300BO gas port in barrel was too small, drilled it larger and works fine now.
556 was feed ramp issues, still not feeding reliably ...need to work on it some more

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