Learn about the Psionic Upgrades Matrix-X Drop-in Bucking from SAT&Gaming Airsoft. This has versions for AEGs as well as Gas Blowbacks and VSR-10s... "These rubbers are the latest from Psionic Upgrades, after the shocking R-Hop the now famous Italian brand offers a traditional solution with top-of-the-range performance."

Anvil Airsoft TV (AATV) takes a look at the Psi-Hop from Psionic Upgrades with a comparison with the Flat Hop and the stock Hop... "We take the Psionic Upgrades Psi-Hop to the range along with Anvil's Flat Hop and a Standard Hop to see what difference to range swapping hop-up style can make. The results were obvious!