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Q&A for J&E Machine Tech AR-15 Mil-Spec Gen III SOPMOD Buttstock — 6 Questions & 6 Answers

Name J&E Machine Tech AR-15 Mil-Spec Gen III SOPMOD Buttstock (3.5)
As Low As $53.00 Save 23%
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Q
NA, guest, from FL, United States, asked on February 20, 2021

Can the J&E Machine Tech GEN III SOPMOD Buttstock be used with an AR-15 rifle extension tube or just the carbine configuration?? Thanks. John Gray

A
Answered by Brandon, member, from UT, United States, on March 25, 2021

This is only compatible with mil-spec carbine receiver extensions.

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Q
Dave, guest, from NC, United States, asked on September 14, 2020

Is this adjustable?

A
Answered by Brandon, member, from UT, United States, on March 25, 2021

This is an adjustable stock for mil-spec receiver extensions, but there is also a pinned option for state compliance, if necessary.

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Q
Ronald, guest, from WA, United States, asked on July 09, 2020

What is a recommended buffer tube kit for this model?

A
Answered by Brandon, member, from UT, United States, on March 25, 2021

Any standard, mil-spec carbine buffer kit should work.
https://www.opticsplanet.com/aero-precision-ar15-carbine-buffer-kit.html

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Q
Ronald, guest, from WA, United States, asked on July 09, 2020

Is the Mil-Spec Gen III SOPMOD stock expandable/telescoping or fixed? It appears to have a release lever in the mid section suggesting that it is...

A
Answered by Brandon, member, from UT, United States, on March 25, 2021

This is an adjustable stock for mil-spec receiver extensions, but there is also a pinned option for state compliance, if necessary.

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Q
Trini247, member, from PA, United States, asked on May 29, 2020

New to the AR15 family and wanted to upgrade my Ruger 556 Buttstock, will this fit three Ruger 556?

A
Answered by Brandon, member, from UT, United States, on March 25, 2021

Yes, this should be a direct swap on the Ruger AR-556.

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Q
Don, member, from KY, United States, asked on May 03, 2020

Does this stock have any wobble to it?

A
Answered by Brandon, member, from UT, United States, on March 25, 2021

There are very few adjustable stocks out there that will have zero play. Paired with the correct mil-spec buffer tube, movement should be minimal. If it's too sloppy once you have it mounted, you can eliminate some of that play with a single, small strip of electrical tape.

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Last updated 2025-11-12 UTC.