BCA Anti Reversal Latch Compression Spring Modification Kit siegetek Assists in keeping the piston

Assists in keeping the piston properly reset to reduce stress on the gearbox

fits in most M4 buffer tubes

the compact FS 3K regulator is the best in the industry

According to 49CFR 180

Heavy Duty Nylon

BCA Anti Reversal Latch Compression Spring Modification Kit siegetek Assists in keeping the pistonIn a well tuned gearbox, the gears, piston, and other main components should almost never fail. For many years however, the failure of the simple anti reversal latch spring remained a difficult issue to resolve as no matter what brand spring was used, there was always a chance of failure due to the design and cheap spring metals used by all companies. What we have done developed a modification kit for VFC V2 gearboxes (but will fit some others as