F-1 Firearms Officially Licensed UDR-15-3G Full Metal M4 Receiver Set (Color: Black) ninja Rear sight can be removed hpa m4 adapter FPS Range 370 400 Style:Blue/White NINJAPK68D
Yard notes & kiln story
Description
Rear sight can be removed to install micro dot sights
Weight: 2520g
Low-profile design makes it easy to conceal without hindering your ability for quick draws
No modification of gearbox shell needed
The Echo 1 combat sight set easily flips down when you want to utilize an optic for better target acquisition
F 1 Firearms Officially Licensed UDR 15 3G Full Metal M4 Receiver Set (Color: Black) ninja Rear sight can be removed hpa m4 adapter FPS Range 370 400 Style:Blue White NINJAPK68D Rear sight can be removed to install micro dot sights Weight: 2520g