!rare ar15 barrel identification help! Please


PDA






YankeeRiverCustom
March 11, 2012, 01:50 AM
i recently purchased a barrel i have never seen before, ive spent hours searching pictures with not even a remote similarity, this bbl is C colt marked on the FSB on the underside of the barrel(18"bbl), its made of stainless steel..and has the original SP1 light profile, i just got my AR back today and have not shot it yet, but im trying to get some more info..my friend who has connections to buy these "rare" parts insures me its a colt..i paid 175$ new..but no idea on twist rate, year of manufacture..i do not have any pictures yet...the only marking on this barrel is that TINY colt C thats it! IM SO FRUSTRATED:banghead: and happy at the same time to own such a rare barrel, its not everyday you find a Colt SP1 stainless steel barrel--SO PLEASE HELP ME GET INFO ANY IS APPRECIATED!!!:) i really need to know the twist rate and what the differance between a regular sp1 bbl and SS are? and production year

If you enjoyed reading about "!rare ar15 barrel identification help! Please" here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!
firesky101
March 11, 2012, 01:53 AM
I am not a Colt junkie, but you can determine twist rate with a tight patch and a marked cleaning rod, just how far does it take to make 1 rotation.

YankeeRiverCustom
March 11, 2012, 01:56 AM
thanks i will try that! have you ever heard of a SS SP1 barrel?

dprice3844444
March 11, 2012, 03:07 AM
http://www.durysguns.com/shop/colt-sp1-ar-15-.223-rem.-used-gun-inv-120410

YankeeRiverCustom
March 11, 2012, 03:14 AM
thats close but mines 18"s...and is polished SS...does anyone know the twist:confused:

briansmithwins
March 11, 2012, 01:20 PM
thats close but mines 18"s...and is polished SS...does anyone know the twist

Cut down and polished?

The barrel could have been modified after tit left the factory. There is enough of a premium on Clot products that I would not rule out a unscrupulous person from counterfeiting Colt marks either.

Have you tried contacting Colt?

BSW

Shear_stress
March 11, 2012, 03:52 PM
There never was a stainless steel SP1. There were a few done in electroless nickel ("Colt Guard") as in the link that dprice posted (where it is incorrectly described as stainless.)

YankeeRiverCustom
March 11, 2012, 05:15 PM
sorry guys this barrel actually measures 19"s(not quite 20?) which is weird! and it has not been chopped or modified, it came sealed in bubble wrap with rubber thread protector on the muzzle threads(no A2 sight holes drilled though).so it is definitely a new factory barrel, I haven't tried Colt yet because im thinking all i have to go on is the tiny 2.5MM "C" marking by the gas block, no other markings what so ever, the guy who sold and installed the barrel is a Professional Custom AR15 builder and really knows his parts, hes a die hard Colt freak, so i do believe him. i talked to him today about it, and he said "its a colt, no other company uses that specific "C" it is very distinguishable" he bought 4 of these barrels from an unspecified source..only said that they were from a close friend who had them for a long time in a gun vault.and are extremely rare. the profile of it is unique, looks just like a Vietnam era barrel only shiny SS..Also you can see the lathe marks on the barrel im completely stumped:confused: again its SP1 style light profile in stainless steel only marked with a single tiny C
PICTURES WILL BE UP SOON, THANK YOU FOR THE HELP, PLEASE KEEP POSTING I REALLY WANT TO FIND SOMEONE WHO HAS SEEN OR HEARD OF THIS BARREL BEFORE

YankeeRiverCustom
March 11, 2012, 05:16 PM
@ shear-stress......yes my barrel is that exact profile!, but is real SS

rcmodel
March 11, 2012, 05:38 PM
How did you determine it is stainless steel and not just a normal steel barrel that missed going through the Parkerizing tank?
Will cold blue do anything on it for instance?

Any evidence it is chrome lined?
Flatter whiter color at the muzzle and chamber ends?

rc

YankeeRiverCustom
March 11, 2012, 06:13 PM
How did you determine it is stainless steel and not just a normal steel barrel that missed going through the Parkerizing tank?
Will cold blue do anything on it for instance?

Any evidence it is chrome lined?
Flatter whiter color at the muzzle and chamber ends?

rc
I just compared the barrel to two other Stainless barrels, a 17HMR, and a RRA heavy SS barrel, the cold blue made a tan-rust color so i guess its possible it missed parkerizing? but the barrel looks VERY similar to my other comparisons, the only REAL difference is the lathe tool marks from MFG...other than that no sign of chrome lining(compared it to a AK47 bbl) So have there been reports of Colt bbls that missed parkerizing-that go to the retail market? but if it is a odd ball barrel its pretty cool! thanks for that info..im uploading pics now

YankeeRiverCustom
March 11, 2012, 06:48 PM
http://www.flickr.com/photos/62716177@N04/6827782614/
(The "C" by the gas block)

http://www.flickr.com/photos/62716177@N04/6973882271/

http://www.flickr.com/photos/62716177@N04/6827729754/

http://www.flickr.com/photos/62716177@N04/6973846763/
(the complete rifle)


http://www.flickr.com/photos/62716177@N04/6973896855/


PLEASE COMMENT IM OPEN TO ANY AND ALL OPINIONS!!!

YankeeRiverCustom
March 11, 2012, 06:49 PM
http://www.flickr.com/photos/62716177@N04/6973846763/

YankeeRiverCustom
March 11, 2012, 06:50 PM
http://www.flickr.com/photos/62716177@N04/6827725684/

YankeeRiverCustom
March 11, 2012, 07:22 PM
http://www.flickr.com/photos/62716177@N04/6973890675/

YankeeRiverCustom
March 11, 2012, 07:23 PM
http://www.flickr.com/photos/62716177@N04/6973884229/

YankeeRiverCustom
March 11, 2012, 07:28 PM
http://www.flickr.com/photos/62716177@N04/6973838255/

briansmithwins
March 11, 2012, 07:46 PM
Need pics of the muzzle end of the barrel and crown, if you can.

BSW

YankeeRiverCustom
March 12, 2012, 01:03 AM
this is the best pic i have right now, and i just put a new crush washer on so i cannot remove the flash suppressor unfortunately...i will have BETTER pics very soon...THANKS AGAIN GUYS!!!!much appreciated

YankeeRiverCustom
March 12, 2012, 01:04 AM
http://www.flickr.com/photos/62716177@N04/6973896855/

YankeeRiverCustom
March 12, 2012, 01:07 AM
http://www.flickr.com/photos/62716177@N04/6973882271/

YankeeRiverCustom
March 15, 2012, 02:13 AM
Please any one with any info please!!!!post

hardluk1
March 15, 2012, 12:43 PM
The picture showing the handguard and barrel up to the flash hiderlook as if there is rust or tarnishing on the barrel. The pictures are just not clear enought to help. If the barrel is in the white as in a carbon steel ,does it have a chrome bore. Early barrels had NO marks and no chrome bores . Maybe an unfinished steel barrel that never made it to finish work while barrels in general were updated to chrome bores. I see at auction site sp1 finshed barrel sell for 175 to 200 . Contact colt and see if anyone can help.

YankeeRiverCustom
March 17, 2012, 02:47 AM
The picture showing the handguard and barrel up to the flash hiderlook as if there is rust or tarnishing on the barrel. The pictures are just not clear enought to help. If the barrel is in the white as in a carbon steel ,does it have a chrome bore. Early barrels had NO marks and no chrome bores . Maybe an unfinished steel barrel that never made it to finish work while barrels in general were updated to chrome bores. I see at auction site sp1 finshed barrel sell for 175 to 200 . Contact colt and see if anyone can help.
yea in the picture it does look tarnished, but it isnt its just as shiny as my Savage 93R17FVSS barrel, my camera sucks really bad so the quality is awful, it does not appear to be chrome plated at all and is lacking the signature white band on chrome lined bbls, in all honesty it Appears to be authenic SS...i did a "Patch Twist test" and it seems to be a 1:9 twist bbl....so i guess the 2 questions are now this, HAS ANYONE SEEN A BARREL LIKE THIS?? SS or unfinished carbon steel??? and is there a WAY TO CHECK IF ITS ACTUALLY SS? thanks for helping guys...please keep the input rolling!!!

madcratebuilder
March 17, 2012, 07:30 AM
I've never seen a Colt barrel like that. My first thought is a bubba job on a unknown barrel.

briansmithwins
March 17, 2012, 09:30 AM
What stainless steel did/does Colt use? Is it magnetic?

As far as the pics go, can you pull the flash hider and get a close up of the crown? That and a clear pic of any stampings or markings on the barrel and some close ups of the FSB and how it's attached would be usefull.

BSW

hardluk1
March 17, 2012, 02:41 PM
yes it will be magnetic if SS.

YankeeRiverCustom
March 18, 2012, 03:31 AM
What stainless steel did/does Colt use? Is it magnetic?

As far as the pics go, can you pull the flash hider and get a close up of the crown? That and a clear pic of any stampings or markings on the barrel and some close ups of the FSB and how it's attached would be usefull.

BSW
no i cant remove the flash suppressor at the moment(just installed a new crush washer) BUT the crown "appears" to be a standard Colt Pencil barrel crown(yea know kinda looks like a "sporting" crown on a hunting rifle? i did a magnet test as you and @hardluk1 stated to try IT STICKS NICE AND HARD, so im 99.9% sure its real SS...and the odd thing is IT CANNOT BE A standard SP1 barrel @briansmithtwins It lacks the drilled holes for a standard A1 or A2 sight post? and THE ONLY STAMP on the whole bbl is the "Trademarked Colt C" right in front of the gas key on the underside of the bbl..also my friend who sold me this barrel IS A AR15 GENIUS specializing in Colt rifles, he owns 10 or more Colt AR15s, and is a Master rifle builder out of the military, he is truly smart and knows everything about Colts(he builds civilian custom,police and swat duty Rifles....i trust him what he tells me is the truth,because on many times hes lost sales because he told me to stay away from certain guns,parts which is quality and which is junk, this barrel IS NOT A BUBBA BACKYARD SWAP MEET HOMEMADE JUNKER, its extremely accurate(for a pencil) and handles 5.56natos no problem so that also points to Colt, HEY GUYS IM GOING TO MAKE A VIDEO ON TUESDAY 3/20/12 ...MY YOUTUBE SCREEN NAME IS sinofallsinners --SO PLEASE CHECK IT OUT AND MAYBE WE CAN GET BETTER IMAGES AND PERFORMANCE EVALUATIONS OUT OF IT....as always i appreciate any and all comments! please keep em coming!!

Shear_stress
March 18, 2012, 10:14 AM
The only stainless barrel Colt made was a 24" heavy profile barrel for their "Accurized Rifle" model.

What you have is not a stainless Colt barrel, unless it was cut down. Can you provide the diameter of the barrel? The SP1 will have a diameter of 0.625" forward of the handguards. If the diameter of yours is greater and it's not stainless than that it will have additional markings shown below. I don't know how Colt's stainless barrels were marked.

http://www.ar15.com/forums/t_3_123/241681_.html

YankeeRiverCustom
March 18, 2012, 11:06 PM
The only stainless barrel Colt made was a 24" heavy profile barrel for their "Accurized Rifle" model.

What you have is not a stainless Colt barrel, unless it was cut down. Can you provide the diameter of the barrel? The SP1 will have a diameter of 0.625" forward of the handguards. If the diameter of yours is greater and it's not stainless than that it will have additional markings shown below. I don't know how Colt's stainless barrels were marked.

http://www.ar15.com/forums/t_3_123/241681_.html
yes the barrel is a 0.625 the same as the SP1 pencil, thats why i have that giant gas block, it was the only one handy, i would have preferred a spikes tac, but it works for now

If you enjoyed reading about "!rare ar15 barrel identification help! Please" here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!