Hop-Up Feeding Base For M4 / M16 Series Airsoft AEG by AIM TOP

"This was an umexpected suprise not only did I get this part quickly but...It was made out of metal.My m4 is rockin now thank you Evike.

One note for install....the part may need a little grinding in order for it to seat and gearbox to mount.

"I just bought this part a week ago and received it in the mail yesterday and after installing it I discovered it was defective. The tube was oval shaped and caused improper feeding and led to my m4 jamming. Apparently i also bought the last one and it is now out of stock. So my m4 is useless until I get a working replacement. So I'm giving this part 2 stars.