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9/22/2017 12:11:25 AM
Posted: 9/5/2010 10:00:49 AM EDT
Link Posted: 9/5/2010 10:56:47 AM EDT
Marked SP1 tells me someone put it all together.Could have been an original SP1 carbine(because you said it has the 2 pos stock) but someone went on to replicate an XM177 series carbine.Can you get back and take pics?? Code of conduct does not like us to discuss values here,but you will be receiving emails/IMs.
Link Posted: 9/5/2010 11:03:17 AM EDT
Sounds like a mutt to me (minus the lower & stock), way too much $$ for it.
Link Posted: 9/5/2010 1:52:21 PM EDT
Link Posted: 9/5/2010 2:10:34 PM EDT
Link Posted: 9/5/2010 4:48:49 PM EDT
Link Posted: 9/5/2010 4:51:53 PM EDT
[Last Edit: 9/5/2010 4:54:03 PM EDT by m1sniper]
Ahh,I see.Well,don't know the reason,but on my 1979 Palmetto Arms carbine,it had one too.Why???????? Maybe to make installing/uninstalling the gas tube easier.It worked that way for me,and that's the only reason I can come up with.
ETA,I doubt it's a gas adjustment as standard gas tubes are solid in the front anyway.
Link Posted: 9/5/2010 4:56:07 PM EDT
Sounds like a rebarreled SP1.

The Colt barrels should have some kind of markings on it.
C MP C or Chrome bore. Something not blank.

1600 is very high.
I would maybe pay 1600 for a mint almost unfired SP1 Carbine.
I have seen a few go for 900-1100 that were for sure original and in good shape.
Link Posted: 9/5/2010 5:11:42 PM EDT
I'm trying to imagine this configuration. If you drilled through the rear opening where the gas tube enters the FSB, the hole would eventually come out the front. Thread it and install a set screw. If I got it right it wouldn't have any impact on the amount of gas. Gas adjustments are usually on the side just above the gas port. The screw regulates the amount of gas. It could be used to tap the gas tube out with some type of dowel shaped object. Neat solution if you remove the tube a lot, but if you remove the tube a lot it wouldn't be stuck anyway. Oh well, someones nifty modification.

The barrel, or at least the moderator is wrong. The price is very high even if it was the lowest number serial number for a carbine.
Link Posted: 9/5/2010 6:01:11 PM EDT
Did the FSB look anything like this? Although there is an external adjustment screw on this Rhino gas piston system, my first one had an Allen screw for adjustment that was flush with the front of the sight base.

Link Posted: 9/5/2010 6:04:15 PM EDT
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