Hk owner vp 9 - DPM Heckler & Koch VP-40 & SFP-40 Mechanical Recoil Reduction System

Horrible and useless doesn't even begin to start on this product,one of the two spring s barely fit and the other not at all , it's a simple spring and op rod setup that shpuld be a slam dunk to manufacture but there is no way in no way I would ever actually fire this product in any firearm let alone a VP9 , no clear path to get ahold of the manufacturer which is a clear red flag this kit is defective to a fault.