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New Armalite AR-10 - Bolt doesnt lockback?

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Replied by 13fcolt on topic New Armalite AR-10 - Bolt doesnt lockback?

Can you post a pic of that buffer & tube? sounds like you got some AR15 parts in there.
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11 years 3 months ago #16412

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Replied by LebbenB on topic New Armalite AR-10 - Bolt doesnt lockback?

FYI, the length range for an AR10 buffer spring is 10 1/6" to 11 1/4"
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11 years 3 months ago #16413

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Replied by LebbenB on topic New Armalite AR-10 - Bolt doesnt lockback?

Exactly what I was thinking.
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11 years 3 months ago #16414

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Replied by LebbenB on topic New Armalite AR-10 - Bolt doesnt lockback?

That 1/2 to 5/8 you're short probably means the previous owner installed an M4 receiver extension on your AR10. An M4 RE is 6 and 15/16ths long, or about 5/8ths of an inch too short.
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11 years 3 months ago #16415

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Replied by j1mmyr1chter on topic New Armalite AR-10 - Bolt doesnt lockback?

I will check it out LB, many thanks! I think I recall a rough measurement of 7", so this may be where my trouble is.
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11 years 3 months ago #16416

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Replied by OleCowboy on topic New Armalite AR-10 - Bolt doesnt lockback?

OK this is easy, you are screwed or in this case since you replaced the stock there is a screw you need to also replace. Call them up and you can send it in or they should just send you the screw. I just went thru this...
11 years 3 months ago #16417

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Replied by j1mmyr1chter on topic New Armalite AR-10 - Bolt doesnt lockback?


Lets see if I can do this...

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11 years 3 months ago #16418

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Replied by j1mmyr1chter on topic New Armalite AR-10 - Bolt doesnt lockback?

What screw would that be? I think all thats involved with this stock is the locknut that holds the tube to the receiver, right?
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11 years 3 months ago #16420

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Replied by j1mmyr1chter on topic New Armalite AR-10 - Bolt doesnt lockback?

After some more reading and looking at my pic, I am thinking more and more that my tube is the wrong tube. From what I have read, the longer AR-10 receiver extension tube should stick out from behind the collapsible stock by about 5/8" when its collapsed completely. Anybody got a thought on that?
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11 years 3 months ago #16421

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Replied by LebbenB on topic New Armalite AR-10 - Bolt doesnt lockback?

No, when completely collapsed the stock should be flush with the end of the RE.
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11 years 3 months ago #16425

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