The Madbull Sniper Accelerator Hopup Bucking is designed with a soft rubber and silicon material to allow for maximum adjustment and increase overall performance of your sniper rifle.
The bucking is specially designed to seal compressed air and prevent double BB feeding. Each package comes with two bucking that work with the Echo1 M 28 and VSR-10 style rifles.
– Softer rubber/silicone material
– Specially designed to seal compression
– Prevents double feeding
– Two accelerator hopup buckings per package
– Will enhance 25% of performance