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Old 03-22-2013, 10:13 PM   #11
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The guys at the range freak out when I start bump firing my 5.45x39 AR.

They tell me things like, your wife will kill you when you come home without any ammo, or did you OK it with your banker to come up here & shoot.
I just tell them that it is cheap ammo, because it is I stocked up back when it was about 9 cents per round.
I have seen it recently as high as $299 per 1080rd spam can, when I bought in it was $98 per can.

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Old 04-10-2013, 07:15 AM   #12
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Okay so before work today I stopped by Legion Firearms to talk to them about ideas for the 5.45 build (since they declined my request to build it for me). The guy I talked to was super helpful and had a lot of great ideas but it got me thinking about all the little things that I overlooked like gas tube diameter, buffer weight, buffer spring, etc.

Anyone have some hard data on some of the systems that other companies have come out with in the past like S&W and Spike's?

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Old 04-11-2013, 04:21 PM   #13
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S&W built a successful 5.45 in an AR platform so it can be done.
\
My 5,45 is a 74, but I dearly love the cartridge.

Like you I "squirreled" away "several" Spam cans of 7N6 ammo at ~ $95 per can.

I'd love to have a 5.45X39 upper for the ARs.

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Old 04-12-2013, 04:43 AM   #14
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I first intended to just buy a completed upper assembly but since I'll be slapping it on my first built upper, I just wanted to build the whole thing and put exactly what I want on it instead of modifying a factory configuration. I found an article on defensereview.com and the guy built a 5.45 AR and I think I'm going to copy it except slap a Troy Alpha 15" instead of his Daniel Defense 12"

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Old 04-28-2013, 04:28 AM   #15
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Quote:
Originally Posted by carnestopher View Post
I have seen great reviews on the Adams Arms upper. Anyone have an opinion on them?
I just bought one used but in great condition.
Paid MSRP for it.

I feel strongly that the Adams Arm supper is a better choice for this dirty ammo with hard bimetal bullets compared to the Smith.
The Smith has 4140 barrel and was chromed barrel and chamber.
But I am really liking that the AA upper has the BCG and bolt melonited as well AND it uses 4150 steel for the (melonited) barrel.


Put it on a spare lower I had lying around and mounted an ancient EOtech (build year 2k or 2k2 I forgot) on it.

have not shot it yet since i just had eye surgery and am not supposed to shoot for another 2 weeks.

5.45mm Ammo can still be had for around 18 cents a round so I got 2 cases.

I still consider my other guns to be more premium and the AA upper doesnt feel as quality as a SR556 or SIg 516 upper of course but its also surprisingly light.
And the piston components are melonited as well.

I have not added an upgraded hammer spring to the lower yet.
Dont know for sure if its necessary for sure but would prefer to add it before i go shooting..
Reason is I dont want to drive 2.5 hrs ot our "range" and then find out my stock hammer spring in the lower is too weak to reliably ignite the surplus primers

Anyone have a link to an in-stock source for the upgraded hammer spring??
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Old 04-28-2013, 11:15 AM   #16
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I would sure love it if anyone had a link!


Also, when I add the extra power spring, is there any chance of a foul up with .223/5.56 primers if I were to put another 5.56 upper on it?

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Old 06-08-2013, 04:46 AM   #17
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I too am planning a 5.45 build but I'm having a hard time finding any parts when I do a google search. The best thing I've seen is a full upper from Model 1 Sales but I've read nothing but bad stuff about them There was also an upper on midway and I put myself on the notify list but it says it won't be available until january 2014. Lol. Have you had any luck finding parts?

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Old 06-08-2013, 11:08 AM   #18
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Find a local FS/FT forum in your state.

There is always someone who want to sell a 5.45mm upper because their range wont let them shoot the 5.45 mm ( since it has penetrator)

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