Description
The CAA CBS Tube is precision machined from 6061-T6 aluminum, finished in a deep Type III hard-coat anodize, and cut to the true mil-spec outside diameter — so every mil-spec butt-stock slides with the perfect no-rattle fit.
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Six laser-indexed detents give repeatable length-of-pull from CQB tight to armor long.
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Rolled receiver threads resist galling in forged or billet lowers.
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Drain ports along the 6 o’clock clear water and grit from the action spring.
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Works with any standard castle-nut / end-plate set or CAA’s low-profile TLRP lock-ring.
