[RA-Tech] Forged GBB M4 Receiver[For WE-Tech M4 GBB Series][AAC 300 Backout Marking]

The receiver was nice, however the tolerances was a bit tight. all the pins were very difficult to get in. Not only the (included) roll pins for the forward assist and bolt catch, but also the receiver pins and trigger group pin. The coating and milling is done very nice! Sadly the dust cover does not remain closed perfectly. Don't know if this is caused by the cover or the receiver, but I didn't had this problem with the original receiver.

Overall I am happy with the receiver, but RA-tech should take a look at how tight all the holes are drilled.