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Old 03-01-2021, 09:47 AM
ZBill

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Seek assistance with dedicated .22 conversion kit



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The good folks over at the Colt Forum assisted me in determining that the unit shown below belongs to a dedicated.22 upper. They suggested posting in this forum for additional information. There are no identifying marks on the unit.

I'm seeking your assistance in manufacturer ID and is this a complete unit and likely to be serviceable. Any help is appreciated.

Respectfully, Bill
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Old 03-01-2021, 10:07 AM
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Looks like a Ciener unit for a dedicated barrel. The bottom of the rails seems to have a moderate amount of finish wear, but that may just be the lighting.

Last edited by H-R-B; 03-01-2021 at 10:09 AM.
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Old 03-01-2021, 10:15 AM
ZBill

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Thank your for the identification. I appreciate it. Bill
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Old 03-01-2021, 02:18 PM
colonelhogan44
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Looks just fine to me, order a barrel/upper/handguard and get to shooting!
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Old 03-01-2021, 04:49 PM
Triggershoe
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Originally Posted by colonelhogan44 View Post
Looks just fine to me, order a barrel/upper/handguard and get to shooting!
I agree with ColH, but you had better measure the ID and length of that collar just to see what your are working with BEFORE ordering a barrel.
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Old 03-01-2021, 08:21 PM
colonelhogan44
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I agree with ColH, but you had better measure the ID and length of that collar just to see what your are working with BEFORE ordering a barrel.
Sage advice.
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Old 03-02-2021, 03:09 PM
ZBill

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Thanks for measurements suggestion. The collar measures .545 inch in length and .495 inch Inside Diameter. The feed ramp looks to be in excellent condition. I certainly appreciate the response to my information request.

Respectfully, Bill
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Old 03-02-2021, 03:27 PM
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If times were normal, you might be able to replace the collar with the one in the link below, then use that BCG in a dedicated rimfire upper using which ever barrel from a wide selection you like best.

https://www.righttobear.com/RTB-22LR...tb-22ba415.htm

Of course, times aren't normal and your barrel choices aren't what they used to be.

EDIT - I bet you could place an o-ring around a CMMG pattern 22lr barrel or a Taccom barrel so your existing collar would locate evenly around the barrel nub. If that didn't work, you could then get another barrel collar.

Last edited by zukiphile; 03-02-2021 at 08:37 PM.
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Old 03-02-2021, 04:00 PM
ZBill

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Thanks for this information Zukiphile. This is getting complicated 🤕 for a neophyte like me. Respectfully,Bill
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Old 03-02-2021, 05:26 PM
zukiphile is online now
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Originally Posted by ZBill View Post
Thanks for this information Zukiphile. This is getting complicated 🤕 for a neophyte like me. Respectfully,Bill
It is complex. It's a corner of the 22lr world in which lots of different manufacturers make pieces and parts that aren't necessarily interoperable with every other part made.

If I had that bolt and wanted to keep my life simple, I'd sell it and buy an RTB or CMMG BCG with dedicated collar and barrel. The new bolt will have a couple of improvements you will be happy to have.
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Old 03-02-2021, 05:54 PM
ZBill

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A wonderful suggestion to go with a brand new BCG and sell this one. I appreciate your time to response to my questions. Bill
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  #12  
Old 03-02-2021, 05:55 PM
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Other than Ciener being an A%^ Nothing wrong with his conversions. But as said, you need the correct collar for the barrel you use it with. Sadly the collars are probably kind of hard to find right now..That said, the newer CMMG stanless BCGs are better..

I have used the old John Cieners before..Pick em when I see em cheap.
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Old 03-04-2021, 07:51 AM
Erik72
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I just purchased another BCG from Right to Bear. They are generally pretty good about keeping their inventory up to date on the website. It appears they have the RTB collar available (which is the same thing as CMMG). This collar will open up your options to available barrels. The barrel nub should be 0.700" long and 0.460" dia.

This collar and a barrel and you'll be gleefully shooting 22LR. Taccom3G is making barrels for this collar again, Lothar Walther, Beyer Barrels, CMMG Inc., and Right to Bear all make barrels compatible with this collar. It's just with the current state of things, availability is questionable.

https://www.righttobear.com/RTB-22LR...tb-22ba415.htm
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