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Posted: 2/22/2007 10:14:24 AM EST
Okay guys (and gals) - I have a new CMMG lower and I'm ready for a new upper. I would like to put a flat top receiver on it. There are so many to choose from but can any one reccomend one over the other?

Also, I'm thinking long range... is there a benifit having the 24" fluted and the 20" heavy? Will the 24" get me out to 600 yards? Will the 20?

If there are already threads about this, can someone point me in the right direction?

Link Posted: 2/22/2007 11:28:10 AM EST
I have never been disappointed with anything available at Bownells. I saw that they had a DPMS flat top upper, and checked prices with other net vendors. Brownells was very reasonable and I like their guarantee so I went with the DPMS and Brownells.

I put on a used barrel, a used bolt/carrier/ejection port door/ forward assist and it went together perfectly.

Finish quality is excellent, and it shoots well too. No complaints.
Link Posted: 2/22/2007 12:00:00 PM EST
Denny's guns has a great deal going on bare uppers right now.

Link Posted: 2/22/2007 12:00:28 PM EST
[Last Edit: 2/22/2007 12:03:11 PM EST by FZ1Steve]
Ooooh, I get to post some pics. I have a DPMS 20in stainless heavy upper. DPMS chambers their heavy barrel uppers in a true .223, if you believe them. This is a 1x8 and favors the heaver bullets, 68, 69, 75. I asked and they don't recommend using 5.56 but it does not void the warranty so...
Anyway, I am very pleased with my upper. I bought it here on the EE, a guy bought it for a build and changed his mind, new in the box.

110yrds, I know I still missed the dime. Should have done better but my eyes at 52years old are not what they once were. The most significent change I made was to install a Chip McCormic trigger module. The groups shrank from 1and 1/2 down to dime size. The stock trigger is just not that great for precision work. YMMV
Link Posted: 2/22/2007 8:02:42 PM EST
Thanks for you're help. I really would like to get a few more opinions though. I'm sure there are some people here at AR15.COM that have opinions.

What about my question of 600 yards. Is it possible with the AR in .223?

Link Posted: 2/23/2007 3:08:27 AM EST
[Last Edit: 2/23/2007 3:09:33 AM EST by nevadasun]
If I were to build a rifle like that, I would think about a LaRue A3 Stealth upper, with a barrel from White Oak Armament. A combination like that should get you out to 600yds. no problem.
Link Posted: 2/23/2007 6:19:01 AM EST
a longer barrel will give you higher velocity. stiffest barrel is a bull. get a 1/8" twist at least and handload 75gr^ if you expect to hit at 600yds.
Link Posted: 2/26/2007 5:42:14 PM EST
I'm looking at the 24" Varminter Extra Heavy Barrel with 1:9 button rifling from Bushmaster. Any opinions on this barrel?
Link Posted: 2/26/2007 5:48:04 PM EST
[Last Edit: 2/26/2007 5:49:04 PM EST by nevadasun]
I think I would take a good hard look at the RRA 24" Varmint HB 1/8

Link Posted: 2/26/2007 6:19:47 PM EST
You might check this link, it shows an AR shooting 680 yards, and the owner tells you exactly what he's using:

Link Posted: 2/26/2007 8:45:07 PM EST
White Oak Armament sells some fantastic barrels and uppers. Like the MK12 MOD0 and MOD1...soon to have SDM, which will be my next upper.
Link Posted: 2/27/2007 1:14:31 PM EST
Originally Posted By nevadasun:
I think I would take a good hard look at the RRA 24" Varmint HB 1/8


Oh wow... she is beautiful!

There certainly a lot of choices. This is why I asked you guys.
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