Specna Arms Replacement Rotary HOP-Up Chamber for M4/AR-15 AEGs

If you need an affordable HOP chamber replacement, the Specna Arms Replacement Rotary HOP-Up Chamber is exactly what you need! This HOP-up chamber is a replacement part and comes with all the necessary pieces for installation, including the HOP-up rubber and nub. The main chamber is made from a sturdy plastic polymer and is compatible with all M4-style AEGs which have V2 Gearboxes. It is an affordable solution to mend your platforms with damaged or old HOP-up chambers. The Specna Arms HOP-up chamber is a great fix for those old primaries sitting in the garage to get them shooting again.