UTG Europe M4 Car Leng Extended 2-PC Drop-in Quad Rail with Rail Cover
Designed to fit Car. Length Model 4/15. Has a lot of slots for attaching a scope or accessory – 19 Top Slots, 23 Bottom Slots, 25 Left/Right Continuous Slots. Installs without any modification to the barrel.
Manufacturer: UTG Europe
frankopan klaric (verified owner) –
It fits pefectly and there is no wobble. Very sturdy. It is heavy so if you want a lightweight weapon then you should look for something else.