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bolt gap

  1. HK CLONE TALK
    I'm new to the whole game of owning a Cetme and I am aware of the bad reputation with Century. I am having the issue where when the bolt carrier group is fully forward it is impossible to pull the charging handle all the way back without hitting the stock on the ground and pulling down. I have...
  2. HK CLONE TALK
    six years ago i bought a century arms C 93. at the time i thought it was the coolest gun i have ever seen, six years later i hate it. so after years of looking at the post on this site i now decided to join up and see if i can finally get this gun working correctly. So just like alot of people...
  3. HK CLONE TALK
    Hello, new member here. Update: I forgot to say that I measures the gap in mm. I recently bought a new PTR 91. I wanted to buy spare parts for it and this included two HK BCGs. The bolt heads, LP, firing pins and springs were all new in the factory package. The bolt carriers were both used...
  4. HK LONG GUN TALK
    Edited 2/13/14I changed out the locking piece and put a heavier spring in. The bolt gap is now .009 and if you put a little effort .010 fits. The rollers that are in it now are .313 so what size do I need to get to proper bolt gap. The length of the bolt size is 1.839 Edited 2/13/14 My cetme...
  5. HK NFA TALK
    I checked the bolt gap on my mp5 tonight, and it is quite small (I can't recall specific, but I will remeasure and post tomorrow). I will have to buy some oversized rollers to fix this (I have a new bolt/carrier/locking piece installed already). My question is, aside from the wear on a locking...
  6. HK CLONE TALK
    So I bought this thing a couple of months ago. I took it out and put some rounds through it after a healthy cleaning and had some FTF and FTE. I know I may have dented a round or two through when inserting into the clip, so my bad. After that, it shot pretty well. I got home, cleaned it again...
  7. HK CLONE TALK
    With Coharie Bolt - .017" (.43mm) With HK Bolt - .027 (.70mm) Why would the hk Bolt be so high? -4 rollers would bring it down, but would there be any other problems since the original gap was so high? The hk bolt is brand new. Just curious to see what factors could contribute to the...
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