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Posted: 1/17/2012 3:12:40 PM EDT
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Picked this one up recently and I am confused on which model would be correct for a build. The kit also included type F handguards and what appears to be a type D stock.
Slick side receiver with no forge code, square forging, double stamped C proof and black rebated front take down hole. FSB with C and bell, drain hole and the flashing appears to have been milled off. Also and not pictured, the sling loop is attached with a brass rivet and is plastic coated. C MP C barrel stamp I appreciate any and all input. Thanks! |
It is a slick side.
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I would guess that its a later 604 upper. Naaa man,,just to the left of the C stamps looks like square forge,I want to see if the forge line below the port door lines up with the lower. The double C stamp is not a common thing,but i've seen it before,it should have the C in box,then a tiny vp in what appears to be a triangle.Can't figure the double C,unless it was just an oppsss double tap with the punch.My 1/14 601 barrel has an extremely faint double tap vp stamp between the FSB legs. OP,can you back up and take a pic of the entire upper?? Both sides.I'd like to see the forge lines above where the mag well would be. |
| Didn't member Luciousclay just sell a few identical to this less the double tap proof? Non chrome extension. Probably real late 1970 early 1971 C and Bell FSB CMPC. Can you see the VP triangle stamping? Keep in mind it's a much lower demand 604 not a high demand 603. |
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Thanks ! The bore looks like new, hasn't been shot much.
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I am mystified. It appears to be a early 604 square forge, early smooth FSB, with later C MP C barrel. Never seen the double tap C stamp before. Either way it shakes out it appears to be a gem! Lucky you, enjoy! |
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Thanks all for the info. I also have a parkerized full auto carrier with no FA serrations and no "C" stamp. Is anybody aware of who manufactured it ? Colt most likely. Picture to confirm??? +1, i don't know of anyone making slickside carriers back then, a few make them now like young mfg but they have their logo on it. |
| Sounds like the 604 I want now. RBRD! Appreciate it! Think I'll just go shoot my mutt 604. Faux green furniture, dimple pins, early receiver, gas tube but serrated Colt M-16 BCG with P chrome bolt an once not very long ago NOS CMP Chrome Bore. It's been real good to me! Looks like a dinosaur. Hits a lot of reds at 100yds in a full mag. With irons it's my 2nd best AR with my eyes anyway. |
| 1965,66,67 ish vintage square forge. C stamp does make it Colt,,without the vp,,that could,and I stress could mean it didn't get assembled AT THE FACTORY as a complete rifle.The vp stamps indicate that a "complete" rifle was factory test fired with a hi pressure round.If there were no problems then,and only then it would receive the vp stamp.The double C is just an anomaly. |
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1965,66,67 ish vintage square forge
I agree but I've sure seen more than a few in identical configuration. (Square forge CMPC barrel C and Bell FSB smooth even with proofs). Wouldn't think the AF would have worn the barrels out that fast but no proofs would easily explain mismatch of parts. |
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1965,66,67 ish vintage square forge I agree but I've sure seen more than a few in identical configuration. (Square forge CMPC barrel C and Bell FSB smooth even with proofs). Wouldn't think the AF would have worn the barrels out that fast but no proofs would easily explain mismatch of parts. It could always be the upper receiver was damaged and replaced on a good barrel. |
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It could always be the upper receiver was damaged and replaced on a good barrel.
Excellent point of view. Majority I see are this way or rebated round forge with a chrome bore barrel (some obviously arsenal built) but most every 604 I've seen still had proofs. Would be a lot easier to trash the receiver than the barrel. Either way it would put a square forge receiver in a later time frame than it's mfg dates would suggest and didn't SP-1's have a square forge receiver past 1967 also? Definately not up on SP-1's though I've seen post 67 serial dated square forge uppers but they might not have been proprietary to the lower they were on. Think I just got dizzy looking at the dancing tiger. |
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1965,66,67 ish vintage square forge. C stamp does make it Colt,,without the vp,,that could,and I stress could mean it didn't get assembled AT THE FACTORY as a complete rifle.The vp stamps indicate that a "complete" rifle was factory test fired with a hi pressure round.If there were no problems then,and only then it would receive the vp stamp.The double C is just an anomaly. This. |
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1965,66,67 ish vintage square forge. C stamp does make it Colt,,without the vp,,that could,and I stress could mean it didn't get assembled AT THE FACTORY as a complete rifle.The vp stamps indicate that a "complete" rifle was factory test fired with a hi pressure round.If there were no problems then,and only then it would receive the vp stamp.The double C is just an anomaly. This. Do you know something different with the config. ? I added the brass retainer. |
| I have a govt re-arsenal 604 upper with the odd color snap ring also. Mine is a parkerized greenish color like the old garands and matched the J stamped M-16 BCG that came in it but upper is C stamped and proofed so I know the BCG was swapped out. Think M1sniper nailed it. Only way to explain a Colt upper without proofs as a general rule unless refinished and covered up. Don't own one but have sure seen enough square forge 604's with identical barrel and have seen them with and without the chrome extension also with both early and late gas tubes and an array of BCG combinations when included. I call them typical 604's. |
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