Guillotine | CNC Hop-Up Arm & Nub for VFC M249 GBB

The stock hop-up arm on the VFC M249 gets the job done, but it's not exactly precision-engineered. The Guillotine CNC hop-up arm and nub is a direct replacement that gives you more consistent BB pressure across the bucking, which means more predictable backspin and better performance at range.

Guillotine Airsoft are a community-trusted brand in the HRC world — they make parts for platforms that don't always get a lot of aftermarket love, and the M249 is a good example of that. If you're running a VFC M249 seriously, this is one of the first internal upgrades worth doing.

CNC machined from 7075 aluminium. Drop-in fit, no modifications required.

In the box: 1× Guillotine hop-up arm, 1× nub