M4 Feedramp Alignment

XDkid · September 10, 2015, 12:05am

Hey guys, quick question/concern here. This upper I put together is a Spikes “M4” upper reciever with a BCM 11.5" lightweight barrel. I am concerned about the alignment of the feed ramps between the receiver and barrel. The bolt locks up and it seems to feed ok, haven’t taken it to the range yet.

Here is a pic:

Thanks for any advice…

Leaveammoforme · September 10, 2015, 1:09am

Doesn’t matter. But if you want to ‘fix’ it get a new upper. I can tell by your pic that the upper ramps are cut unevenly by the distances to the bottom of upper.

Iraqgunz · September 10, 2015, 2:34am

The M4 ramps in the upper are weak sauce.

The_Bachelor_Farmer · September 11, 2015, 3:37pm

This may help?

DirectTo · September 11, 2015, 6:40pm

That won’t cause any issues at all. Shoot it.