The new DAA C-More Sight Mount is actually 3-in-1. This unique and original design incorporates a C-More Slide Ride Scope mount with removable blast shield, a retractable single arm jet wing, and the DAA adjustable thumb-rest. ALL IN ONE. The low profile mount just clears the top of a standard STI slide. A thick cut aluminum sidewall and mounting plate insure stability and rigidity. The thumb-rest is fully adjustable and the jet wing fold out arm will support the gun off the table top - allowing for an easier fast grip. The folding arm locks open or locks closed and tucks away neatly along side the scope, for easy storage and transport.