Now in improved V2 spec: Grub screw M4X10 or Roll-pin M3.5x10: you now can choose from which method fit you better. The c-pin is now butter-smooth to knock into Improved shape according to H&K RS example Beware that the charging handle support does not fit V1 without modification, the bolt cannot be fully closed, 3mm of material has to be manually removed from the rear to fit V1. If you intend to use V2 bolt carrier, then only 1mm material has to be removed Can’t do HK slap with your stock MP5? Now you can! Engineered in Germany CNC steel cocking handle support for VFC MP5 V1 and V2 GBBRNot fitting MP5K nor WE/SRC MP5 seriesFor airsoft only! NOTE: please kindly check if your MP5 really is from VFC or Gen1/Gen2 before placing order, simply send photos via Shopify inbox to us if you are not certain. SKU Code: CP00008 UPC: 710946738980 Compatible Model: VFC MP5 GBB V2 Main Material: Steel 45 Production Method: CNC Milling Finish: Phosphate/matte black