Pressure Plate Mount and Thumb Rest

When I first picked up my airsoft gun, I immediately held it with my thumb on the left rail of the hand guard. Then, I thought "I want a platform to keep my thumb here and help me hold my rifle more sturdily," so I designed this thumb rest / pressure plate mount. It helps me grip my rifle extremely firmly when I run an angled foregrip. It also keeps my thumb perfectly positioned to tap my flashlight's pressure plate when I need to take quick shots. It's ergonomic for me, but let me know if you w