[Jarhead0331]

OK folks...I asked this question over at AR15.com and wanted to ask it here as well. What better place to ask a question about a 1919a4?

I just purchased my first belt-fed weapon...you know what they say, "if it ain't belt-fed, its crap!" Anyway, its a Ohio Rapid Fire Semi-Auto and the thing looks pristine. However, I'm having a problem getting the bolt to freely move into the forward locked position. I believe I've tracked the problem down to the left side plate and the swing extractor/ejector. Specifically, on the left side of the head of the swing extractor/ejector, there is a spring loaded "button" (I believe this is the plunger that forces the extractor to follow the correct pathway on the left side plate). If I push the button with my thumb, it will move all the way into the head no problem...However, if I pull the bolt all the way to the rear position and release it forward, there is a spot about half way forward where that little plunger seems to get stuck on the left side plate of the receiver (left side if you are positioned to the rear of the 1919 with the barrel facing forward). The only way to get the bolt all the way forward again is if I pull the bolt all the way back and manually guide the swing extractor/ejector above that spot on the receiver where that button gets caught. Alternatively, I can get the bolt forward after whacking the op rod a few times with a rubber mallet. I've lubed the receiver and entire bolt very well, but that little plunger part gets stuck every time and I can't see anything on the track of the left side plate that is causing it to get stuck...

I'm hoping you guys might be familiar with this issue and be able to give me some feedback on how to fix it...Thanks in advance folks!

Semper Fi

 

[B-3]

Try screwing the barrel all the way in. If it is all the way in - turn it out about a 16th of an inch

 

[Jarhead0331]

Try screwing the barrel all the way in. If it is all the way in - turn it out about a 16th of an inch

Interesting...I have not fully stripped the 1919 yet so I'm not too familiar with all the parts, but as I understand it, the barrel screws into the barrel extension. The swing extractor/ejector is getting caught on that side plate nowhere near the barrel...I'd say there is a space of about 3 inches between the point of lock up and the end of the barrel...under this circumstance, I don't really see how the barrel's connection to the extension could be causing the problem, but I will look into that...

Thanks man...

 

[ali059]

Yes,

Sounds to me like a headspace issue, have you headspaced it correctly?

 

[Jarhead0331]

Yes,

Sounds to me like a headspace issue, have you headspaced it correctly?

Have not headspaced it at all...I'm really green with these things. Give me an AR15 and I'll field strip it in 8 seconds...

I'll look around the resources of this site for directions on how to properly head space these things.

 

[Lucky#13]

Definitely check the head space. But also check to see if the problem occurrs only with the top cover open. The extractor may not always find its way through the two cams on the left plate, when it does not have the top cover cam and spring to guide it as well. It is not uncommon to have the extractor get caught with the cover open.

 

[ali059]

http://1919a4.com/tutorials/tutorial-headspacing.asp


Go here on a tutorial!

 

[patriotpa]

DON'T FIRE THAT THING until you understand HEADSPACING inside and out! Improperly set headspace on a Browning .30 can destroy the gun, and send chunks flying!

 

[Jarhead0331]

Yes...the more I read this forum, the more I see how critical headspacing is...do I need the headspace gauge? I thought I read someplace that I should not use it.

 

[Dan @ Angola Armory]

With the bolt and barrel extension removed from the gun,lock the bolt into the barrel extension (breech lock up). Remove the barrel lock spring then screw the barrel in until the bolt won't move, back out three notches, then re-install the barrel lock spring.The correct headspace for most ammo is .125 which is 1/8". Use a drill bit for a guage. This is usually three clicks out from a fully screwed in barrel.This is a good starting point, some ammo will require another "click" out. Learn to headspace correctly, this cannot be repeated enough.
Dan

 

[blkbd]

Send "Want2race" a member here a email or PM, As he made a video showing how too head space without a gauge. Do to a forum crash last month we are unable to get it from the forum directly.

 

[GUNRUNNER5150]

Definitely check the head space. But also check to see if the problem occurrs only with the top cover open. The extractor may not always find its way through the two cams on the left plate, when it does not have the top cover cam and spring to guide it as well. It is not uncommon to have the extractor get caught with the cover open.

took the words right out of my mouth lucky mine has done the same thing with the extractor catching the lsp, but only with the top cover open.

 

[PKw VI Tiger1]

My 1928WC was doing the same thing when I fired it eventhough I set the headspace correctly (the extractor's plunger was getting caught at the rear of the cam) so I changed the top cover spring and polished the end of the plunger and that fixed the problem on mine.

 

[Jarhead0331]

Yes...the more I think about it, the more I don't think its a headspace issue because the bolt is locking up too far back. Additionally, if I strike the bolt handle with a rubber mallet, the bolt will move past the point its getting stuck and go all the way forward into the locked position. I will try to take a picture of it and attach the file for you guys.

Thanks

Oh...the problem exists with the top cover open AND closed...

 

[Roc Rat]

My 1928WC was doing the same thing when I fired it eventhough I set the headspace correctly (the extractor's plunger was getting caught at the rear of the cam) so I changed the top cover spring and polished the end of the plunger and that fixed the problem on mine.

This might solve your problem,, if you examine the rear of the cam you should see a slight semi circle. This does in fact engage with the extractor plunger and acts as a bolt hold open. Under normal conditions, if you open the top cover, pull back the bolt and set the extractor plunger into the catch(semi circle) it will hold back the bolt,, (the drive rod will be protruding from the back plate to enable the locking into the back of the bolt)
Under normal conditions, when you close the top cover, the TC spring will push the extractor plunger down and out of the catch, allowing the bolt to drive forward into battery. You might have a bur on the plunger and catch that is holding it back,, a weak spring that does not have the force to push the plunger out of the catch. If you have been hitting the charging handle with a mallet, you might have deformed the plunger, allowing it to catch when its not supposed to.

 

[Jarhead0331]

Roc Rat...I was having the problem before I started using the rubber mallet on the bolt rod. So whatever is causing it didn't, at least initially, have anything to do with my rubber mallet...but the point is well taken...

Just say "no" to whacking with a mallet...

 

[scoutfal]

So,

is the top cover open when this is happening????

Mine must have the top cover shut or it will hang just as you describe.

JW

 

[mch28]

Is there a way you can post a couple pictures of where it hangs up and how far back it is?

 

[Jarhead0331]

scoutfal...it locks up with the cover open AND closed.

mch28...I'll try to post pictures this Saturday.

 

[xkss62]

Pull the extractor off the bolt and see what happens. That will tell you if its the plunger on the side or something else.