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Posted: 1/12/2006 5:00:16 PM EDT
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This build is a Recce inspired Midlength. Based on a 16" Denny's GTS mid length barrel. Details on the barrel here I also used a Denny's GTS lower from CMT. I matched the serial number of the lower to the number of the barrel. The barrel and FSB were marked with a number to match them after parkerizing. Details on the Denny's GTS lowers here I used CMT/Stag parts through out the build for consistent quality. THe CMT upper is a perfect fit with the GTS lower as well as a good color match. 4/14/06 UPDATE I had planned on building another Operator using a LaRue 9.0 tube and dot sight. After talking with Denny it looked like the Operator barrels are a ways out so I decided to use this barrel for that build. I am using a 16.1 Noveske Recon with a 13.2 inch tube to replace thish original build. I decided to use a EoTECH 512 and LaRue riser. New Pics:   Tools/materials Used: DPMS action block DPMS barrel wrench Small ballpeen hammer 1/8" roll pin punch Small tube of bearing grease for thread lube 9/64 allen wrench for LaRue tube and gas block Blue loctite Vise on my mini-mill Lower: Receiver - Dennys GTS by Stag/CMT LPK - CMT (from Dennys) Stock - Vltor Clubfoot (Eagle Firearms) Buffer - Vltor H Grip - MagPul MIAD (Denny) KNS pins (Denny) MI single point adapter QD style (Bravo) D&H black teflon mag with grey Gen2 Magpul follower (44mag) Upper: Receiver - CMT M4 T-marked - (Denny) BCG and CH- CMT M16 with MP tested bolt (Denny) BUISR - Troy (Denny) BUISF - Optic - Optic mount - Barrel- Operator 16" Mid (Denny) FF Rail - Rail Covers - TangoDown and MagPul (Denny) VFG - TangoDown (Denny) Flash Suppressor - YHM 5C2 Phantom (Denny) PIX!   New pics 2/6/06 Dennys GTS lower assembled:     With Brother Skich SOCOM build:  Now Reconfigured! with LaRue 9.0 and EoTech. |
I had the same issue and really hope my replacement doesn't have the same problem.
Will do. Looks like there was a batch of bad uppers. Edit: 1/16/05 after further review the CMT upper from Bravo had the same finish issue. |
Yes it is. I did my first LaRue using a clam type that I hacked up. This one is much nicer as it doesn't contact the finish on the receiver. |
Looking good so far.  I also got my Operator barrel from Denny and I'm very satisfied with it, great quality. I just upgraded my Colt 6721 tactical carbine with the Operator barrel, LaRue 9.0 (directly from Larue Tactical), Phoenix FS, TD panels & VFG, KAC BUIS, Magpul ladder rail protectors, MIAD grip, trigger guard, Norgon mag catch, KNS pins, Stag Arms ambi selector, Vltor club foot modstock kit & buffer tube sling mount and BlueForce IDF style sling. All my parts are from the EE boards. I used my new tools which are Model 1 Sales clam type 3 pc action block, YHM handguard wrench (which I got from Bravo Company) and my old Sears large strap wrench. I was lucky, no scratches. I also used my Schuster upper holder (from ADCO) to install the handguard tube, FSB and FS. My furniture color are dark earth/ coyote. I'll post pics and range report later after I tested mine. Good luck on your build. |
Thanks. Nice build. I need to get a small strap wrench myself. I've just tightened the ring by hand for now. Thanks for the feedback. |
holy smokes -- what's left from the original 6721, just the roll pin that holds the fwd assist in???  ar-jedi (*) |
I also didn't use a strap wrench at first because I wanted to check everything out before I used the blue loctite. The strap wrench is not requied per the LaRue instructions because of the locking design but it's a good insurance that it's good and tight. ar-jedi, That was kind of funny thread but I don't have a problem with my forward assist now and specially with my former first AR-15 SP-1. The only thing left from my 6721 was the upper, CH, M16 BCG and lower but the upgraded carbine is much lighter now than factory stock, thanks to Denny's barrel.  |
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Bump and Update. I was adding the parts I got Saturday and noticed the same finish flaking on the inside of the upper from I assume the carrier rubbing that edge. I then tested some other external sharp edges and sure enough, flaking. Per Paul at Bravo I'll be sending this one back to Stag directly. I have since ordered yet another upper, this time from Denny's again with a note to not send me one with flaking finish  .Just to note that i tried the same thing on my CMMG and LMT uppers and the finish did not fall off. |
On the CMT finish issue. I have two more cases of uppers coming and they are a fresh batch. I will check them over for any finish issues. I have built on and sold hundreds of CMT/Stag uppers and had no problems at all. I think there was just a freak batch. Update when the new ones arrive will be posted. Denny |
Thanks Denny |
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Count one more for a flaky upper finish. I have more "wear" on this upper in three trips to the range than I have ever seen on any of my uppers-- including one other CMT and four colts. The operator barrel has worked great, tho! Denny, are you working with CMT on that question? GH |
I've built 8 rifles on mine, 6 of them w/ YHM FF HG's, 1 w/ a Samson, and 1 w/ standarg rifles HG's It's never even come close to causing a problem. |
The last batch from CMT were fine. I guess the anodizer just screwed the pootch on one batch. All is back to normal now, except for delivery time. I am expecting another case of M4 cut uppers today. Standard uppers in stock and are all fine. Denny |
Yeah, the two replacements from Stag and one from Denny were fine. |
I just got in another 2 cases of CMT M4 uppers and they tested just fine. Back in business  PS If have ordered a CMT M4 upper in the last 10 days or so it will be on the way tomorrow. Denny |
Is this something I should be worried about with the CMT upper I got from you a few weeks ago? |
If you rub a finger nail over a sharp edge and the finish stays on you are good to go. If it flakes off, send it back. |
Thanks Denny. As soon as you get your batch of lowers in I can finish my BCM middy. I also want to another build around an Operator barrel, similar to your Operator build. |
Heh That lower looks like this now.  Details on the Colt SOCOM M4 build here |
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