To sell or not to sell?

[Ah Pook]

When, in this saga, did you have the problems with the reloads? It sounded like the reloads had some crimping issues, causing the round to stick in the barrel. Close?

Reloads or not, if it's a new upper, I'd call BCM.

I hate it when schtuff don't work.

[Jmetz]

Its not their problem it wont shoot "cheap" ammo, also if they are like most manufacturers as soon as you say reloads they will tell you to pound sand.

So far in the level of customer service I've seen from them I think they would work with you.

[trlcavscout]

I am gonna shoot some different factory ammo out of it this weekend. If it doesnt work through them I will call BCM.

[ldmaster]

How you have a lot of people that will "do you a favor" and trade you one of their uppers for it?

Always good for a laugh!

Your upper is suffering from a gas, inertia and timing problem. Do you use the heavy buffer? Without it army M4's were having problems with timing - Colt now installs ONLY heavy buffers in it's carbines.

Pigtail gas tube would help. Chrono a few factory rounds, if they seem especially "hot" then the gas tube isn't bleeding enough pressure, too low and it's bleeding too much and causing timing problems. either way the manufacturer shouldn't have a problem fixing it for you.

Colt is also mandating the use of the FA bolt carrier, again, the weight of the carrier was affecting timing in their M4's.

I have a 14.5inch w phantom, and the heavy buffer and FA bolt carrier - never had a burp from anything aside from brain dead problems.