
Originally Posted by
RVGP
What I noticed last night when I took it apart after the test firing was the bolt itself moved side to side while in the complete rail assembly and was kinda binding up when closed. When I took off the insert portion, the bolt became tight side to side in the rails, like I would expect. The cutouts in the rail where the insert sits are somewhat rough cut. So, either the grooves in the 223 insert are cut too shallow or the rail cutouts are too shallow. Either way the rails are being forced out, side to side, maybe making contact with the inside of the upper receiver and making insertion and extraction harder AND making the bolt sloppy and not locking up properly to extract the empty. I could file the rail down until the bolt becomes tight.
Would you mind checking to see if your bolt move side to side?
What do you think, should I just say 'hell with it' and send it back for replacement to try to keep fixing it?
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