The Fix SBR features a modular design, which means that many of its components can be easily swapped out for aftermarket parts or upgraded as needed. The firearm comes with a folding stock and a modular handguard, which can be customized with different rails and attachments. The FIX by Q, if its not obvious already, is the Mini Action version of The Fix. Advantages and features mimic its short action big brother, but with a few changes. The Q FIX has a smaller receiver and bolt assembly and accepts the M4 magazine. Q FIX SBR SPECIFICATIONS Brand: Q LLC Model: Fix