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  #201  
Old 1 October 2017, 11:18
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Quote:
Originally Posted by iraqgunz View Post
Typically when this happens, the extractor spring is too stout. This occurs when people use enhanced springs along with the highly abused O-ring.

The O-ring shouldn't be needed for proper function. The 7.62x39 AR's do not operate at the same type of pressure that the 5.56 guns do.
This was my initial thought, so I dissembled and found 2 things; 1, the doughnut and 2, the extractor pivot pin was REALLY hard to get out.

I am gong to try and shoot it with the BCG from my carbine.
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  #202  
Old 1 November 2017, 21:10
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Got the barrel from TFG: A very nice 10.5" .300 with a stainless extension. He even ran a patch down the pipe

Put together this pistol upper on the cheap, but it should be fully nice and functional:
  • $100 donation TFG's barrel
  • $24 no-name 10" handguard with Mlok slots
  • $39 Yankee Hill gas block and tube
  • $18 FirePig-style flash suppressor / sound projector
  • $49 AR Stoner forged upper
  • $12 upper parts kit
  • $74 AR Stoner BCG
  • $18 charging handle

My guess is that it will run just fine, assuming that the gas hole in the barrel, which looks like the friggin Black Hole of Calcutta, is actually the correct size.

If it turns out that it is overgassed, what functioning symptoms would you expect?

Thank you for your contribution, TFG. Well done.
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  #203  
Old 2 November 2017, 00:53
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I just remembered a slick little trick that 'Dave' over at the Legion's local sniper school taught me- cutting/grinding off 2 coils on the selector switch detent spring makes the selector move as slick as melted butter, but still decisively engages the detent...

YMMV but mine is the shizzel...
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  #204  
Old 2 November 2017, 09:52
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Quote:
Originally Posted by RGR.Montcalm View Post
I just remembered a slick little trick that 'Dave' over at the Legion's local sniper school taught me- cutting/grinding off 2 coils on the selector switch detent spring makes the selector move as slick as melted butter, but still decisively engages the detent...

YMMV but mine is the shizzel...
I think I'm going to try this on one of my carbines. Thanks for the info TFG.
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  #205  
Old 5 November 2017, 19:00
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Finished the .300 Blackout build this afternoon by making up the 80% lower. Found a Shockwave Blade that was unemployed, so it got pressed into service.

Range day is hopefully Wednesday.
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  #206  
Old 6 November 2017, 17:11
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  #207  
Old 18 November 2017, 18:29
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Quote:
Originally Posted by RGR.Montcalm View Post
I just remembered a slick little trick that 'Dave' over at the Legion's local sniper school taught me- cutting/grinding off 2 coils on the selector switch detent spring makes the selector move as slick as melted butter, but still decisively engages the detent...

YMMV but mine is the shizzel...
Have done this on a couple of my ARs now. Super slick. Go slow and keep checking for tension so you don't snip off too much.
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  #208  
Old 18 November 2017, 22:35
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Originally Posted by The Fat Guy View Post
This was my initial thought, so I dissembled and found 2 things; 1, the doughnut and 2, the extractor pivot pin was REALLY hard to get out.

I am gong to try and shoot it with the BCG from my carbine.
This fucking thing is working my last good nerve. I think what it is is that the tube is too long so the spring is not getting adequate tension to cycle the bolt. I now have 3 bolts for x 39 and still no joy. I ordered a KAK tube, made for the brace, its about 1.5" shorter than the one on their now. I could have just built a pistol from scratch.
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