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1/25/2018 7:38:29 AM
Posted: 3/7/2002 5:22:36 AM EST
I have an upper from one of the Tapco kits. It is a Colt 20" 1/7 preban. I don't really need another 20" upper nor do I necessarily need another preban upper. Was thinking of cutting the barrel down to 16" and making it a kind of Dissapator type carbine. Anyone see any flaws in this plan?
Link Posted: 3/7/2002 5:35:49 AM EST
I did exactly what your talking about and it works fine. I put the upper together with a new bolt/bolt carrier on a new lower I put together with the collapsible stock and the rifle didn't function well at first. I ended up cutting a coil or two off the buffer spring to get it to function right. It's flawless now with a myriad of different ammo types. I think the original problem may have associated with new bolt gas rings in a new bolt carrier.

When cutting that barrel, be careful if it's a chrome lined one. The chrome lining is platted on and because the chrome is really hard it may flake at the cut or muzzle end. I cut mine to 16.25" and stoned off the last 1/8 inch or so (using a lathe of course).
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