Madbull Sniper Accelerator Hop Up Bucking (2pcs) for Echo1 M28 & Tokyo Marui VSR-10 (Not for Germany)

NOT SHIP AND SELL TO GERMANY

It is very easy to install and operate the softer rubber bucking as it'll allow the BB to fire out easily without any problems as it was designed, specifically for the Echo 1 M28 and VSR-10, to seal the air tightly and prevent double feeding. You must apply silicon oil outside the bucking before use!