Bell & Carlson have stopped marketing their AR thumbhole, & the New Zealanders & the Germans sell their for $500+. The
Feinstein Project is trying to build an affordable AR thumbhole stock to reinforce our ABS plastic AR lower. Would it be possible to build a stock out of styrofoam, wrap it in fiberglass cloth, & then seal it with resin? Would such a stock stand up to .223" recoil?