Airtech Studios Advanced M4 Arm & M-nub All Brands M4 (3 Gear Hop-up)

Thinking of installing an R-Hop set-up on your rifle? Instead of modifying your stock ARM by cutting /sanding which may run the risk of an unbalanced force pressing on the R-hop patch - our R-HOP arm is designed to be a drop-in upgrade to mitigate the risk to give a perfect, TDC (top-down-centre) evenly forced pressure.

 

We were inspired by the self-leveling nub feature found on the Maxx brands for the Silverback SRS hop-up and wanted to bring ideas to the M4 platform. 

 

Features

 

- Perfect Self-Levelling TDC Top-down-centre force applied evenly on the R-Hop patch.

- No need for modifying the stock arm and adding M-nub (our arm provides both!)

- Easy drop-in with no modifications required.

- M-nub provides an even distribution of force applied across the whole surface of the R-Hop patch.

- Tough Polycarbonate Construction.

- Compatible on all M4 original type "3 Gear" hop-up unit chambers.