The SRQRA Extra Large model is for the RC525 model shaft.
It is a quick release adapter that converts a bolt on light system to a quick release system. Once the parts are fitted the light or camera/thermal that mounts to the remote handle will become a quick release attachment.
The Package Includes:
Also available is an optional (if a thermal is mounted on a Rimtop Mount) long rail to help shift the weight on a spotlight thus avoiding the remote wanting to lean towards a mounted thermal on top. Available here: https://www.eagleyehg.com.au/smartrest-gun-rests/smartrest-parts-accessories/smartrest-rail-for-spotlight-srlrb.html
