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9/19/2026 12:49:31 PM EDT
Hey all, I'm in North Texas DFW

I'm looking for someone with a mill to open up the pocket on an old school Colt lower receiver I have

Yes I understand I could buy a cheap PSA lower, etc, but I want to use this Colt Receiver for my HRT SBR upper build

Doesn't matter if it's low shelf or M16 cut, just need the pocket milled so I can run an FRT, just say that because I'm not trying to get technical

I haven't been able to find anyone on Google and all the local gun shops that are "gun smiths" don't offer any milling services other than on pistol slides....

Appreciate any contact info or POC
9/19/2026 1:35:18 PM EDT
[#1]
Adco is a sponsor and will do the appropriate low pocket cut, if it’s for an frt avoid the m16 pocket if you want to use kabutos or similar
9/19/2026 1:42:43 PM EDT
[Last Edit: TGWLDR][Edited] [#2]
https://adcofirearms.com/shop/gunsmithing/ar15-lower-receiver-mods/remove-sear-block-mill-shelf/


You could also check the TX hometown forum for local options:

https://www.ar15.com/forums/Hometown/Texas/8/
9/19/2026 4:16:50 PM EDT
[#3]
Thank you guys, that's def an option

But I feel like it would turn into a hassle because this is a registered SBR

If I can't find anyone local that might be my only option

But thankful there's at least one on the table now lol
9/19/2026 4:18:48 PM EDT
[#4]
AS Designs ARC Fire

Have used several there's is THE best
9/19/2026 7:09:22 PM EDT
[#5]
There’s a gunsmith in the Sherman area. Don’t know where your located
9/19/2026 7:22:33 PM EDT
[#6]
I'm not a rare breed fan, but they do sell their FRT-15C3 model that works in Colt lowers.
Attached File


If I wasn't in Louisiana on orders we could link up and let you borrow my 5d 80% jig to open the pocket up.

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