GSI APFG MCX Hop-up Arm MPX Buffer A corrosion-resistant screw is included

A corrosion-resistant screw is included with both buffer variants

- RIS Rail Mount

400 hours of battery time using two standard AAA batteries

Optics Coating: Multi coated

SORDIN SUPREME PRO-X SLIM

GSI APFG MCX Hop-up Arm MPX Buffer A corrosion-resistant screw is includedWARNING PREORDER NOW MID AUGUST 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.