Commercial-spec buttstock tubes have a diameter of 1.168”
The Mil-spec buttstock is slightly smaller and has a diameter of 1.148”.
6-8 Days (International orders may take longer)
Drop-in replacement buttstock for AR15/M16 carbines using mil-spec sized receiver extension tubes.
Drop-in replacement buttstock for AR15/M16 carbines using commercial-spec sized receiver extension tubes.
Adjustable stock for AR15/M4 and AR10/SR25 platforms
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