Madbull Hop-Up

Madbull Ultimate Hop Up Chamber The MadBull Ultimate hop-up unit is a really innovative design for the M4/M16 series AEGs. It allows easy and precise hop-up adjustment do to the larger diameter wheel which has been relocated. The traditional style hop-up...

Madbull 60 Degree Hop Up Bucking Features and Functions: Model: RB60 Manufacturer: Madbull   Package Includes: 2x Madbull 60 Degree Hop Up Bucking 2x Madbull Hop Up Nub

Shark Hopup Bucking was originally designed for 470 to prevent double feeding. By having 3 special "fins" inside the bucking, Shark Hopup Bucking can hold one and only one B.B. tightly in the chamber. In the mean time, to our surprise, we found...