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3/26/2007 9:09:31 PM EDT
I just received a C-7 upper with the only marking being a splintered A. Everything fit fine but the charging handle would not slide foreward in the grooves. What I discovered was the track was too narrow requiring me to file down the little humps just above the side tabs that slide in the tracks. Was this normal for a C-7 or was the guideway machined too narrow?

If it is incorrect is there someone who will widen the guideway for the handle? It works fine since I filed the bosses down but it still kinda bugs me.

The charge handle is a Colt as was a second one I tried with the same result.
3/27/2007 9:33:40 AM EDT
[#1]
Question comes down to if the upper receiver was produced by Diemaco, Colt (bought out Diemaco), or just a off shop abortion.

You always have the option of taking the upper back for a refund, and/or it just boils down to if you can live with having to tweak a charging handle to work with the upper.
3/27/2007 4:56:26 PM EDT
[#2]
I'm OK with the way it is. It seems like an otherwise quality part. Someone suggested to me that it may be a RRA or DPMS that was built using a smaller than mil-spec charge handle.
3/28/2007 5:05:13 PM EDT
[#3]

Quoted:
I'm OK with the way it is. It seems like an otherwise quality part. Someone suggested to me that it may be a RRA or DPMS that was built using a smaller than mil-spec charge handle.


Word around here is that some DPMS uppers require a charging handle from DPMS. I’ve heard that the receivers are milled a bit thinner in the CH’s channel.
3/28/2007 5:14:35 PM EDT
[#4]
Anchor Harvey uppers finished by DPMS have tight CH channels.  You need a non-Colt CH.  I had the exact same problem.  
3/28/2007 5:46:13 PM EDT
[#5]
Thanks everyone. My question was answered.
4/1/2007 7:56:05 AM EDT
[#6]

Quoted:
Anchor Harvey uppers finished by DPMS have tight CH channels.  You need a non-Colt CH.  I had the exact same problem.  


My DPMS splintered A C7 works just fine with a Colt charging handle.
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