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Traded, No Longer Available

Postby Renegade360 » Thu Sep 09, 2010 8:07 pm

Looking for big bore Upper, 450B, 458Socom, 50 Beo etc.

I've got 2 6.8spc uppers, but want something a little bigger for close up hog work. So I'm putting some feelers out to see if anyone is interested in trading. What I've got is a 6.8 Upper with 20" Stainless Bison Armory recon profile barrel, YHM smooth rifle length float tube, A2 Flash hider, railed gas block, Headspaced Stag bolt, charging handle, M4 Upper receiver from Bravo Company. Has less than 100 rnds down it. Will include some 25rnd mags too. Can Include MagPul MBUS sights if trading for upper with sights. Could trade whole rifle as well. A2 Stock Rock River LPK. If anyone is interested or has an offer, lets discuss it.

specs on barrel are
ER Shaw Barrel
416 Stainless Steel
SAAMI Spec-II Chamber
4-groove, 1-11" twist
M4 feedramp barrel extension
0.75" diameter at the gas block
5/8" - 24 TPI muzzle threads

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Last edited by Renegade360 on Mon Sep 13, 2010 7:12 pm, edited 2 times in total.
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Re: WTT 6.8SPC SpecII Upper for 450B upper

Postby Mike » Sat Sep 11, 2010 5:44 am

Personally Id stay with the 450 bm.

How bout you send the upper to me and I just make it into a 450 for you? You keep all your stuff, very minimal price, and I can tell if thats a carbine length gas system, I just might be able to make you a hell of a deal.
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Re: WTT 6.8SPC SpecII Upper for 450B upper

Postby Hoot » Sat Sep 11, 2010 9:13 am

Mike wrote:...snip...and I can tell if that's a carbine length gas system, I just might be able to make you a hell of a deal.


Look at the last picture closely. That's no carbine length gas system like the 450b uses.

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Re: WTT 6.8SPC SpecII Upper for 450B upper

Postby 2zero6 » Sat Sep 11, 2010 10:49 am

Looks like a rifle length gas system. My question to the OP is how many .450 rounds fit in the 6.8spc 25 round mags and will the feed reliably? :D
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Re: WTT 6.8SPC SpecII Upper for 450B upper

Postby Mike » Sat Sep 11, 2010 4:10 pm

He also said he had two. Either way, hit me with a PM and we'll see what we can work out.
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Re: WTT 6.8SPC SpecII Upper for 450B upper

Postby Renegade360 » Sat Sep 11, 2010 10:26 pm

2zero6 wrote:Looks like a rifle length gas system. My question to the OP is how many .450 rounds fit in the 6.8spc 25 round mags and will the feed reliably? :D

Yes, this one is 20" rifle gas. I'm keeping the 16" with the Mike Rock 5r barrel.
Same size mag as a 30 rnd 5.56, different follower, feed lips also a little different, opened up a little and a little shorter if I remember right.
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Re: WTT 6.8SPC SpecII Upper for 450B upper

Postby Colohunter » Mon Sep 13, 2010 12:43 pm

2zero6 wrote:Looks like a rifle length gas system. My question to the OP is how many .450 rounds fit in the 6.8spc 25 round mags and will the feed reliably? :D


I tried this awhile back. Most of the 6.8 magazines are the same length as the 223 conterparts, so no extra rounds. I haven't tried the Barrett 30rnd 6.8 magazine. The PRI and Cproducts 6.8 magazines that I have use a wider gap betweent he feed lips to fit the larger 6.8 diameter compared to a 223. When I tried using them for the 450B the gap is too wide and it lets the rounds creep up way to high to function properly.
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Re: WTT 6.8SPC SpecII Upper for 450B upper

Postby 2zero6 » Mon Sep 13, 2010 7:44 pm

Colohunter wrote:
2zero6 wrote:Looks like a rifle length gas system. My question to the OP is how many .450 rounds fit in the 6.8spc 25 round mags and will the feed reliably? :D


I tried this awhile back. Most of the 6.8 magazines are the same length as the 223 conterparts, so no extra rounds. I haven't tried the Barrett 30rnd 6.8 magazine. The PRI and Cproducts 6.8 magazines that I have use a wider gap betweent he feed lips to fit the larger 6.8 diameter compared to a 223. When I tried using them for the 450B the gap is too wide and it lets the rounds creep up way to high to function properly.

Same thing I ran into when trying the mgw 90 round drum. I still need to make the conversion tower for that darn thing. Sorry for the thread hijack. :oops:
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