MK4 Receiver Extension Buffer Tube Lock Nut

Item No. 81583501742
$8.99
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Product Description

81583501742
The CMMG Mk4 Receiver Extension Buffer Tube Lock Nut is a replacement part for MSR receiver extensions. This AR castle nut is built to meet military specifications to provide long-lasting and reliable quality. This buffer tube lock nut is great for repairing or building a lower receiver extension. Repair your tactical rifle with the CMMG Mk4 Receiver Extension Buffer Tube Lock Nut.

Features:
  • Built to meet mil-spec
  • Can be used to repair AR15 or personal builds

Customer Reviews

5.0 / 5.0
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Rated 5 out of 5
It’s spec and it works
Does it’s job. Snug and to spec.
September 16, 2021
Purchased
5 months ago