The Real Deal Airsoft 8mm Low Profile Bushings CNC springs Jake took this into account

Jake took this into account when engineering the piston

MR Hop Bucking $10

Payload Dispersal of Dehydrated Peas

Perfectly spherical with a high gloss finish results in a BB free of seams and surface imperfections

Retro Arms CNC Hop Chamber $38

The Real Deal Airsoft 8mm Low Profile Bushings CNC springs Jake took this into accountThe Real Deal Airsoft CNC Steel Bushings in 8mm CNC Stainless Steel Low Profile 2mm thick Comes in a pack of 6 These bushings have a super low profile at 2mm thick, this prevents unwanted contact between the bushing and the selector plate in V2 systems Applicable for all systems that use 8mm bearing bushing holes. It is recommended to bond these bushings to your gearbox shell with a super glue or epoxy, not always needed but recommended.