That plain leading edge is going to be horrible if you try and brake the sound barrier. Either sweep it forward like the X-29 or go for a trapezoidal wing-form.
It's a gun not a fighter plane!
Looking for a better one than mine. I have very accurate drawings but drew it over scale, otherwise it looks small in comparison to a RN powered twin 20mm.
that because the 20 mm is drawn over size... for some reason!