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XDkid
09-09-15, 19:05
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:

http://s22.postimg.org/clwudl7nl/IMG_0952_2.jpg

Thanks for any advice...

Leaveammoforme
09-09-15, 20:09
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
09-09-15, 21:34
The M4 ramps in the upper are weak sauce.

The Bachelor Farmer
09-11-15, 10:37
This may help?
34944

DirectTo
09-11-15, 13:40
That won't cause any issues at all. Shoot it.