AZ Gun Nut 8 Posted July 26, 2010 Report Share Posted July 26, 2010 I have a problem. I purchased some Bulgarian AK74 parts for my 545 conversion. I have read numerous posts on how to install the GB using a press or modified aluninum tube and sledge hammer. Imagine my surprise when the GB just slid over the barrel right into place. Even after partially installing one pin, the GB is still loose. This cannot possibly be right. Are the Bulgy parts not compatible? Quote Link to post Share on other sites
L5K 162 Posted July 26, 2010 Report Share Posted July 26, 2010 Bulgarian parts worked fine for me... See if you can find someone to measure the inside diameter of a Bulgarian gas block. Mine's on my rifle so I can't measure it... Quote Link to post Share on other sites
AZ Gun Nut 8 Posted July 27, 2010 Author Report Share Posted July 27, 2010 (edited) L5K: Fortunately, I purchased more than one, and the other fit properly. Maybe the first one is not from an AK-74? I will measure it and post. They both mic out at .590, but the one fits sloppy loose and the other one is tight. What up with that? The loose one has a "2" on the side, the tight one has a "4". Edited July 27, 2010 by Gun Nut Quote Link to post Share on other sites
Nailbomb 10,221 Posted July 27, 2010 Report Share Posted July 27, 2010 Got me scratching my head... Quote Link to post Share on other sites
elia.jon1 1 Posted July 27, 2010 Report Share Posted July 27, 2010 sorry to be a jerk but if one is loose and one is tight they both cant mic out at the same spec.....at least not all the way thru...they are a little looser at the back to get started i wanna say Quote Link to post Share on other sites
Wade Pruetz 103 Posted July 27, 2010 Report Share Posted July 27, 2010 Possible that it is a 47 gas block Quote Link to post Share on other sites
L5K 162 Posted July 27, 2010 Report Share Posted July 27, 2010 Can you post a picture of them? Are they both the 90 degree shape? Quote Link to post Share on other sites
AZ Gun Nut 8 Posted July 28, 2010 Author Report Share Posted July 28, 2010 (edited) Can you post a picture of them? Are they both the 90 degree shape? They are both 90 degrees. I will post pics with calipers, hopefully tonight. Yeah, I know, they both measure the same but fit different. I really thought twice about posting that. Sounds like I don't have a clue! No offense taken, but I do know how to use calipers. I just noticed the lightly engraved "4" next to the "2". Anybody know what it means? Edited July 28, 2010 by Gun Nut Quote Link to post Share on other sites
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