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Posted: 12/26/2006 6:21:43 PM EDT
I picked up a 16" SP1 carbine upper at a gun show and I am trying to figure out how old it is. I checked the SP1 data base but there is some conflicting info. The upper has the CM forge code and the barrel is stamped C MP B. The upper also has the triangle and square C stamps in front of the port cover. Any help? thanks
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| I'm sure Ekie will come along at any moment. From what I have read the Carbine was introduced in 1977 and there is a carbine listed in the data base with the same features from '78. I would imagine its an earlier one with the C MP B barrel. It is a large hole upper? |
| It is definately 16". Exact same length as my 6520 barrel. Scottryan, I put a Colt carbine on layaway at the local shop that is stamped C MP Chrome Bore. Thats what got me thinking about this upper. The carbine also has the alluminum stock with vynal coating. Should have that in a couple weeks. |
You know this kind of reminds me of my 20" A1 rifle I have. I have always wondered about it. It fits Ekies A1 profile perfectly except for the fact that the front sight base has only the C and no apparent Bell. I have wonder if the Bell is just lost in the forging or what but it has always puzzled me. |
| I think the one I had came of sn 138k It seemed like an oddball that was years off since Colt went to the CHROME BORE marking at least 4 years before they released the 6001. I'm positive that RichardS has it now. I haven't seen him post in quite a while though. |
It is an odd one. As ranchhand and I mentioned, the carbine wasn't introduced until the late 70's, but they switched from the B marked barrels to Chrome Bore in 74. They obviously had leftovers that they used first. |
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