Range report - AR15 with polymer lower + cheap ammo

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  • Andy

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    Sep 13, 2013
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    Dallas, TX
    New Frontier Arms polymer lower (yes, I know - it's a test-to-destruction experiment)
    PTAC 1/9 carbine upper with Midwest Industries SS12G2 rail

    100 rounds of ammo:
    40 rounds Federal XM193 55 gr FMJ
    20 rounds Tula steel-case 55gr FMJ
    20 rounds Monarch steel-cased 55gr FMJ
    20 rounds Monarch brass-cased 55gr FMJ

    2e2mc8k.jpg


    Everything cycled and fired flawlessly; I'm delighted.

    As it was the first time this rifle has been out, the primary goals were to 1. test for reliable function with a variety of ammo (so I know what I can safely buy in the future) and 2. get the iron sights pretty much set at 25 yards. I didn't have time to formally test for accuracy - family birthday pressure allowed me about 30 minutes, most of which I spent plinking at dirt-clods and chunks of wood at 30 yards offhand after I got the irons set on paper at 25 yards (benched).

    Once I have more time I'll take it out to 50 yards for a 50/200 BUIS zero and then slap a scope on it to see how she groups at 100.

    Edit: Here's the upper:

    ptac_ss12g2_w_bcg_ch_1.jpg

    PTAC SS12G2 16" 5.56mm 1:9 Carbine Length - w/ BCG & Charging Handle
     
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    USOffRoad

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    Jan 18, 2014
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    Granbury, Texas
    I bought one of these lowers last year when you couldn't find a lower for any amount of money. It's still in the safe and since I've bought some extra quality forged lowers I'll either keep this one for a spare or build out an extra/loaner AR out of spare parts I have. My initial test fit with a few of my uppers was actually very good, beyond that it collects dust well.
     

    Andy

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    Sep 13, 2013
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    Mine was gathering dust for the same reason - then I eventually saw an upper I wanted and just figured "Screw it - I'll shoot it till it breaks and then just slap on an aluminum lower".

    It gives me a good excuse to run cheap ammo through something :)
     

    Rangerscott

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    Aug 2, 2010
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    Lubbock
    My new frontier does just fine. Not so well on surpluss 5.45 primers. Gotta double tap those some times with its poly hammer. The poly trigger is actually pretty smooth and it fits tight to the upper, getting rid of the known wobble.
     
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    Andy

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    Sep 13, 2013
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    I was pretty skeptical of the poly hammer too - but I figured I'd give it a proper shakeout and see how it functioned by leaving everything original. 100 rounds down - so far, so good.
     

    Andy

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    Sep 13, 2013
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    Dallas, TX
    Here's a 4-shot group at 50 yards, iron sights:

    iwrw5e.jpg


    (ignore the 30-cal hole at the left, that was from a Mosin-Nagant) I'd say that's a 1/2 inch, so 1 MOA. Ammo was Tula steel-case 55gr FMJ.

    A wider image:

    6tegyw.jpg
     
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