Hop-Up Chamber for S&T Mosin-Nagant series

-Made from aluminium, with black coating

-Compatible with almost all standard VSR-style barrels and Hup-up rubbers

-Tested with Modify Accurate Tan, Modify Xrange and Maple Leaf Autobot rubbers

-The best with using .32g and heavier BBs

-Installing Guide is available on YouTube, the installing doesn’t requires any modification