WARNING - PREORDER NOW - EARLY / MID APRIL DELIVERY
GSI hop-up arm for the APFG MCX. This replaces the stock hop-up arm that can cause BB overhop on the lowest setting. Fits the MCX Rattler, spear lt and Legacy.
The GSI arm has better adjustment and allows an aftermarket nub to be installed into the arm.
The arm already comes with the GSI gold or red (soft/hard) nub.
