The SRWC is a special design quick release weaver rail clamp specifically designed for RC220 and RC500 (requires drilling 12mm hole for the RC500). It can also be bolted on to Light Force RC225. 

The package includes:

1 x Weaver Rail Clamp (SRWC) 

1 x Fastener Kit

• Note: To fit on RC500 remote the user will need to carry out a DIY drilling from 8mm to enlarge to 12mm hole.