Barrett 107 50 BMG won’t cycle....

[crash32]

One of the things I loathed about this particular .50 (we had at least 5 different .50's over the years in the Army) was that from time to time this symptom would arise and Barret as well as the U.S.M.C. laid it down to the bolt carrier binding in the receiver necessitating *straightening* of the receiver. Among other - simpler issues.

In the clearest, most direct way. Describe everything that is happening from the moment you insert a magazine.

Todd.

How can I find out if it’s an issue of the bolt carrier “binding” up?

 

[Gordon]

I have the actual Barrett manual that came with the gun and reviewed it prior to posting. Not sure what bolt carrier “binding” meant. I am not qualified to diagnose that problem. I think that or the spring buffer is the issue. It seems like the last inch of the bolt carries traveling forward.... it really becomes sluggish.
There’s a small groove on the spring buffer that seems like it might be catching on the grove.
When it loads a round property... there’s maybe an eight inch gap between the bolt and the receiver of the gun. When it self loads the second round (incorrectly) .... there’s always like half an inch gap as opposed to the eighth inch gap.
I am going to call or email Barrett on Monday and see what they suggest. Hopefully they will have an authorized gunsmith nearby ... otherwise how much is it going to cost me to ship that monster to them?!?!?!

The cost of shipping is the least you will ever spend on that monster and will end the problems. It is not a pistol so can go ground trak, what will cost is $7000 insurance. Still the cheapest cost with the maximum benefits.

 

[Gordon]

Put a new action spring in it before shipping it. Get one when you talk to Barrett. Sounds like a weak or distorted spring .

 

[ApacheCoTodd]

I guess what I would do at this stage is remove the buffer/spring and note the passing of the bolt/carrier for binding fore or aft.

In addition to using the charging handle - I would try to move the carrier to the rear by pushing on the bolt or carrier face to remove any torsional issues IF there is already binding using the handle.

Then, I would want the carrier to return forward based soley upon its weight and gravity.

Then, I would check the seating depth of the magazine.

Then I would look for signs of dragging of the bolt carrier within the receiver beyond normal wear.

Could be receiver, magazine or simply the main spring. Unfortuantely, you don't have a spare .50 to compare it to let alone more experience.

In any case, if you buy it, before letting any *gunsmith* work on it, I would perform the above checks, take as good a picture of the magazine seated through the ejection port as you can and make some notes before talking to Barrett about it.

Todd.

 

[crash32]

I guess what I would do at this stage is remove the buffer/spring and note the passing of the bolt/carrier for binding fore or aft.

In addition to using the charging handle - I would try to move the carrier to the rear by pushing on the bolt or carrier face to remove any torsional issues IF there is already binding using the handle.

Then, I would want the carrier to return forward based soley upon its weight and gravity.

Then, I would check the seating depth of the magazine.

Then I would look for signs of dragging of the bolt carrier within the receiver beyond normal wear.

Could be receiver, magazine or simply the main spring. Unfortuantely, you don't have a spare .50 to compare it to let alone more experience.

In any case, if you buy it, before letting any *gunsmith* work on it, I would perform the above checks, take as good a picture of the magazine seated through the ejection port as you can and make some notes before talking to Barrett about it.

Todd.

Thanks for the advice. I can certainly take pictures and videos and upload it if it would bf of any benefit.

 

[ApacheCoTodd]

Thanks for the advice. I can certainly take pictures and videos and upload it if it would bf of any benefit.

Sadly, I have nothing to compare it to as I retired from the Army some time back. I'm thinking for the fellas at Barrett should you go that far.

Todd.

 

[Mk-211]

I would call and ask Barrett what they think might be happening and if there's something that you can do.

They're probably going to suggest that you send it in for them to take a look at it. The other plus side to sending it in is that they can check the entire gun for any issues.

Probably going to cost you about $50-100 to ship it with insurance. Well worth it, plus you'll have a Barrett gunsmith work on it.

 

[H&R Glock]

You might see if there is a YOU TUBE tutorial on dis-assembly. There are not too many parts to a Barrett. I understand that take down is not hard. Inspect the parts and make sure it is assembled correctly. If that fails, use a gunsmith.