Bristol Based Airsoft

Crimson GBB Hop-Up Bucking - 65/70 Degree - Finned

The new way to maximise your hop up's performance! Key features: GBB/VSR spec bucking 65 or 70 degree hardness NBR rubber Over-Chambering prevention design Pronounced two-point of contact pressure patch Alignment fin We recommend using the 70 degree over the 65 degree for higher joule builds (1.5j+) or higher average temperatures in your country (25c+). We've been using these as our main GBBR bucking for the last few months of their development cycle to great effect. They've been installed into our personal replicas including the VFC KS1 and XM177, Marksman MK12 and a plethora of TM GBBPs. From CRIMSON: In collaboration with Waldo Dynamics and Cheffington (Ian from Firesupport UK), we spent over a year trying countless bucking prototypes, materials, and contact patch shapes to bring you the best in GBB Hop-up engineering. It all started with an idea; what if the bucking had a tighter initial wall to help slow down the BB to more consistently sit at the same point on the contact patch? After a lot of production and waiting we were finally able to test out this theory, the difference it made was phenomenal. The Problem A big issue a lot of GBBRs have is something called over-chambering;this is where the BB is pushed inconsistently and slightly past the optimal point of the contact patch when a GBB cycles. The weight and speed of the cycling mass is quite a lot to put on top of a 6mm BB and a rubber sleeve (the hop-up bucking). How we solved it The Crimson bucking fixes this by having a thick and durable initial opening. It takes considerable pressure for the BB to be pressed into the hop-up rubber, which helps prevent the bolt and nozzle pushing the BB too far past the contact points. The Benefits This allows for a far more consistent flight path which ultimately makes your shooting experience more predictable. No more worrying if your BBs will fly slightly more left, right, up, or down. Paired with this we also have a contact patch with two points of contact. This sh