On Sale! E&L RA-Tech ESD EVO II KWA LM4 Hop Up Housing for KSC/KWA M4 GBB E&L RA-Tech ESD EVO II KWA LM4 Hop Up Housing for KSC/KWA M4 GBB MSRP Was: $20.70 Now: $13.95 Add to Cart Quick view