Ninhydrin 0 Posted January 30, 2012 Report Share Posted January 30, 2012 (edited) (Title should read: Round will not fully seat; Breech won't fully close) I had finished the full conversion a week ago and have been waiting on ammo to arrive. Now that it has, I was able to test its functionality (minus live firing it.) That's when I came up with this problem: Is this normal? Will it fix itself after firing several dozen rounds? It will strip a round out of the magazine and eject the round just fine, but the bolt won't flush itself completely forward: http://oi42.tinypic.com/e0ixwi.jpg http://oi39.tinypic.com/ml19pl.jpg Here's a few reference pictures of the bullet guide. The shadows don't do it justice, but there's no gappage between the screw and BG: http://oi39.tinypic.com/302osop.jpg http://oi43.tinypic.com/w9y1jk.jpg http://oi44.tinypic.com/23kc7dy.jpg http://oi39.tinypic.com/xbk2mo.jpg http://oi41.tinypic.com/2n8dlp2.jpg Also, I noticed when I fully cock back the bolt and let it go (as it would during normal cycling) the firing pin seems to make a dimple on the primer of the cartridge. My everyday nomenclature would tell me this is NOT a good thing, but I don't know if its related to the issue at hand or if its something AK variants do: http://oi42.tinypic.com/veymw5.jpg Edited January 30, 2012 by Ninhydrin Quote Link to post Share on other sites
vulcan16 971 Posted January 30, 2012 Report Share Posted January 30, 2012 Are you babying the carrier when chambering or letting it "fly"? Dont ever baby a weapon when chanbering. Quote Link to post Share on other sites
haugpatr 972 Posted January 30, 2012 Report Share Posted January 30, 2012 Does the bolt carrier close without a round trying to be chambered? Is the bolt carrier getting caught up on the screw that is holding the bullet guide? Quote Link to post Share on other sites
theorangeplanet 968 Posted January 30, 2012 Report Share Posted January 30, 2012 Does the bolt carrier close without a round trying to be chambered? Is the bolt carrier getting caught up on the screw that is holding the bullet guide? That's what I'm thinking... looks like there's a mark on the rear part of the screw as it something is impacting it. 1 Quote Link to post Share on other sites
Fallschirmjager667 729 Posted January 30, 2012 Report Share Posted January 30, 2012 definitely looks like the bolt is hitting the bullet guide screw, it is too high, did you drill all the way through the trunnion when you installed it? and definitely do not attempt to fire it that way, it shouldnt fire, but still be safe and don't try, as for the primer dimple, i wouldnt worry about it Quote Link to post Share on other sites
Ninhydrin 0 Posted January 30, 2012 Author Report Share Posted January 30, 2012 I initially babied the bolt carrier slowly to see if it binds up on anything, but then I let it fly and it still won't fully close. That's where the dimple on the primer came from in the last picture. Also, when I let it fly, the bolt is completely stuck and I have to use a rubber mallet to get it lose again. The bolt carrier closes flushed perfectly without a round in the chamber. Quote Link to post Share on other sites
Ninhydrin 0 Posted January 30, 2012 Author Report Share Posted January 30, 2012 Yes I drilled all the way through the receiver. It looks I'll have to assess the BG. Would using a flat screw instead of the rounded one it came with be ok, or does it specifically need the rounder screw? Quote Link to post Share on other sites
G O B 3,516 Posted January 30, 2012 Report Share Posted January 30, 2012 Dremmel the head. Quote Link to post Share on other sites
Fallschirmjager667 729 Posted January 31, 2012 Report Share Posted January 31, 2012 so it closes fine without a round? thats really odd, try to grind down the head of the bolt just a little and see if that helps Quote Link to post Share on other sites
thebuns1 4,323 Posted January 31, 2012 Report Share Posted January 31, 2012 check your bolt head for any potential damage as well. thats right around the spot where the bolt rotates, and with a round on the bolt, its causing it to hit the screw. id try to find a screw with a more shallow head, but thats the one they sent with it. id take it off and re-install it. and see if you cant get it to seat in there a little more flush before you take a dremel to it. couldnt hurt none. Quote Link to post Share on other sites
jpg366 2 Posted January 31, 2012 Report Share Posted January 31, 2012 Has to be the extractor hitting something. Sticks out further if a round is there. Quote Link to post Share on other sites
DrThunder88 912 Posted January 31, 2012 Report Share Posted January 31, 2012 Is it a Dinzag bullet guide? Is your rifle from 2006 or later? Is the screw 8-32? Quote Link to post Share on other sites
JohnNicholasM 7 Posted January 31, 2012 Report Share Posted January 31, 2012 Good photos. Looks like the screw isnt screwed all the way down. Is the bullet guide kinda loose? From the looks of the screw it would be. You can see the damage to the screw head where the bolt is striking it. Maybe the hole isnt threaded all the way which would keep the screw from seating fully. Quote Link to post Share on other sites
G O B 3,516 Posted January 31, 2012 Report Share Posted January 31, 2012 If th screw is too long, tap a piece of scrap that is thinner than the BG, screw the screw in that and file it to length. Hardware stores sell electrical strippers with a screw cutter built in for a few $$, and that way you add to your tool collection. Either way works good. Quote Link to post Share on other sites
Ninhydrin 0 Posted January 31, 2012 Author Report Share Posted January 31, 2012 Ok guys. It was the bullet guide's screw. I replaced it with this screw, which was part of left-overs from computer internals: http://oi44.tinypic.com/4h9quc.jpg http://oi39.tinypic.com/o7r4hf.jpg It breeches and cycles perfectly now. Quote Link to post Share on other sites
RED333 1,025 Posted January 31, 2012 Report Share Posted January 31, 2012 (edited) So you were screwed by a screw Edited January 31, 2012 by RED333 2 Quote Link to post Share on other sites
G O B 3,516 Posted February 1, 2012 Report Share Posted February 1, 2012 Screwy! Alto they sound like the same thing, screwing yourself is NEVER as much fun as masturbation! Quote Link to post Share on other sites
thebuns1 4,323 Posted February 1, 2012 Report Share Posted February 1, 2012 cool. Quote Link to post Share on other sites
DrThunder88 912 Posted February 1, 2012 Report Share Posted February 1, 2012 Good work! Here's to saving old parts. Quote Link to post Share on other sites
Scott Kenny 144 Posted February 11, 2012 Report Share Posted February 11, 2012 Oh, about that dimple on the primer: It is normal, but you should be careful with those rounds. Too many repeated taps with the firing pin (by re-using that round) can soften the primer and cause a Negligent Discharge. http://oldnfo.blogspot.com/2012/01/negligent-discharge.html for the story (nope, not mine. That blogwriter drove P3 subhunters, and would be considered my natural enemy). Quote Link to post Share on other sites
hardydk1 3 Posted November 28, 2012 Report Share Posted November 28, 2012 Glad I stumbled across this. Mine is doing the same thing. Going to the store tomorrow to get a screw with a lower profile. Quote Link to post Share on other sites
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