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Discussion Starter · #1 ·
Howdy, I'm new here. I saw a Newbie thread, but it was empty. So forgive me if I overlooked it, but I am trying to learn as much as I can about my new M1919A4, built by Rapid Fire in Ohio. Does anyone know the history of these particular models, or the company Rapid Fire? Looks like they're out of business...

In the initial inspection, it looks like a pretty nice quality weapon. Very solid and tight. I would like to headspace it first, and came across this video, below. Is that a safe-enough method?
https://www.youtube.com/watch?v=m07ZcxpHNgo

Thanks for all your help! I will be going through the forums for the next few weeks, studying and researching before I test fire this thing.
 

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main guy Todd that ran things died a few years ago .





As for safety , other than the general rules.


Place nothing you care about behind that op rod when removing it.
 

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Yes, the procedure you see in the video will achieve your headspace setting. The video also demonstrates the barrel turning quite easily. If your gun is set up for 7.62 and has the proper barrel lock spring, you may not be able to rotate and adjust your barrel as easy as what you see in the video. The 7.62 barrel lock springs are much more positive than the .30 cal. lock springs and often requires moving the lock spring back before rotating the barrel. Something to keep in mind before you start using a bigger screwdriver to rotate the barrel.
 

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Discussion Starter · #4 ·
Gotcha, thanks. From what you recall, have their products been of good quality & reputation?

main guy Todd that ran things died a few years ago .





As for safety , other than the general rules.


Place nothing you care about behind that op rod when removing it.
 

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Discussion Starter · #5 ·
Thank you very much. It is in fact setup for 7.62. With it being pretty tight, in factory new, unfired condition, the barrel is very hard to turn. In that case, instead of using a "bigger screwdriver", what other method should I use to turn the barrel?

Yes, the procedure you see in the video will achieve your headspace setting. The video also demonstrates the barrel turning quite easily. If your gun is set up for 7.62 and has the proper barrel lock spring, you may not be able to rotate and adjust your barrel as easy as what you see in the video. The 7.62 barrel lock springs are much more positive than the .30 cal. lock springs and often requires moving the lock spring back before rotating the barrel. Something to keep in mind before you start using a bigger screwdriver to rotate the barrel.
 

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Once you slide the lock spring out of the slot a little, it will clear the notches in the barrel and it will turn fairly easy. You just have to release the the square notches from the spring tension....
 

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Welcome to the addiction!! Someone here will be able to answer your questions. And it's a friendly place to hangout.
 
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