What is a R-Hop?

Master R-Hop Chamber Rubber for AEG [MM]

Psionic Upgrades Airsoft - Made in Italy

BLOOMIES R-Hop barrels and complete drop-in units

Maple leaf Mr Hop (R Hop) Bucking – The Real Deal Airsoft

HOW TO AIRSOFT R-HOP! EASY!

R-Hop

PDI R-hop AEG - Snipetor - Buy Now

All About R-Hops kingdomofairsoft

What is the difference between R hop vs H hop in airsoft? - Quora