Plastic/Polymer ARs

Discussion in 'AR-15 Discussion' started by Ruger_Nut, Sep 18, 2013.

  1. Ruger_Nut

    Ruger_Nut New Member

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    I have been doing some research about these carbon fiber ARs. They say the polymer is 4X stronger than aluminum. There is a local gunshop near me that has a few Bushmasters for $500-$600, used, but in excellent condition. Opinions? :confused:
     
  2. JosephMD

    JosephMD New Member

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    My latest AR is polymer - it is good, no problems so far - but until I've had it for 6 or 7 years, I'm not ready to say it is just as good as aluminum.
     

  3. NC1760

    NC1760 New Member

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    Agree. I finished an AR build last year using a Plum Crazy (now under New Frontier Armory ..I think) as the starting point. Added a Del Ton dissipator upper, FAB Defense mag well grip... Magpul flip up sights, sling and 30 rounders... Have since added a forward grip/bipod to help balance when firing from a standing shouldered position (barrel heavy, receiver light).. over 500+ rounds and no complaints so far....
    Going shooting with some buddies next weekend and will compare with Palmetto State, Olympia and an M4 by MMC and get back with you.
     
  4. fsted2a

    fsted2a Active Member

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    Stay away from Vulcan. Lowest quality AR in the business.
     
  5. Quentin

    Quentin New Member

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    They say? Who say? :D

    The guys trying to sell you the Bushie?

    I'd pass unless you want the absolute very least common denominator AR.
     
  6. Ruger_Nut

    Ruger_Nut New Member

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    Scroll down and read the first sentence in the add about the AR for sale. I have come across this "4X stronger than aluminum" catch phrase when doing research on the Carbon 15's. That's why I am here asking Q?s about it so you AR owners can educate me. ;)

    http://www.armslist.com/posts/18280...-sale--bushmaster-ar-15-carbon-15-nib-unfired
     
    Last edited: Sep 18, 2013
  7. fsted2a

    fsted2a Active Member

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    I got a couple of NFA lowers during the panic after Sandy Hook, and I cracked one putting the roll pin to the bolt catch. I took the LPK out of it and put it into the other one. I am saving it for when I decide to build a dedicated .22LR AR, because I don't trust it with anything more powerful. I had a very bad experience with a Vulcan lower years back, and decided to give NFA a try after reading some glowing reviews. Polymer is not my first choice.
     
  8. JonM

    JonM Moderator

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    only in longitudinal strength. as in making a strand and pulling with it. its much weaker than aluminum in shear strength. ar15 poly lowers the walls are thin and this leads to stress cracks around the reciever extenstion and in the uppers around the barrel extension. this is where the sheer forces are the greatest and polymer is the weakest.

    if your just plinking on a range it will prolly be just fine. but if your slinging it up and using it like a true rifle with a good two point sling the sheer forces will bend and flex that poly like a rubber hose. there just isnt enough material in the poly lowers to prevent flexing.

    even the military demanded a reinforce lower when they went to the a2 model which was the major change. the reciever extension area was heavily reinforced to prevent flex stress cracking. poly is substantially weaker in that area.

    thats why i wont use a poly lower or upper. polymer works fine if its strengths and weakness are taken into play and the gun is designed around that. you run into issues when you try and adapt a firearm to a material that is radically different.
     
  9. purehavoc

    purehavoc New Member

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    Well they are half way correct carbon fiber is 4X stronger than aluminum , however they arent making the Bushmaster Carbon 15 out of woven carbon fiber which is indeed stronger , They are making the carbon 15 out of epoxy ,carbon shreds and scraps of carbon " Carbon Composite " , none of it is woven fiber. They also laminate the top rail to the bottom rail Dont fall for the smoke and mirrors trick . If I were your dealer and I told you that I could turn a turd into a diamond would you believe that :D . Just saying
     
    Last edited: Sep 18, 2013
  10. amorris11

    amorris11 New Member

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    I have a carbon 15 from bushmaster, no complaints on reliability so far but I did have to lock tight the rail on the upper receiver. The rail is only held on to the upper by a small screw and before I used lock tight on it, it would come lose all the time.
     
  11. Ruger_Nut

    Ruger_Nut New Member

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    When I was in the ARMY my issued M16 was an H&R. I just wished I was around long enough in the ARMY to shoot the M4.
    I own 2 Mini-14s and am looking to add an AR 15 to my collection. My local WM has a DPMS for $677.
    Ever since the panic attack a few months ago I am seeing the AR prices come back down to reality.
    Any advice is greatly appreciated. BTW, my budget is $700. If that only gets me a decent AR I can add goodies to it later. :D
    BTW, here is a pic of an H&R M16. I posted it because there are people out there that did not know the military issued an H&R M16.

    http://imageshack.us/a/img801/1344/2u98.jpg
     
  12. Donn

    Donn Active Member

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    Ruger, as you can probably tell, this is a well worn path and is as contentious as the Glock vs 1911 threads. I had two Bushmaster C-15's. Both ate everything I fed them and shredded the X ring once the red dot was zero'd. Sold both during "the panic" for a nice profit, but it wouldn't have broken my heart to keep one or both. Would they have held up over the long haul? Can't answer that. Are there better AR's? Of course. Bottom line is, you're not deploying to Fallujah. Till such time as you're ready to upgrade, the Bushie will likely do whatever you need it to.
     
    Last edited: Sep 18, 2013
  13. BigBizz87

    BigBizz87 New Member

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    If the DPMS u looked at is the Oracle then its not bad for that price

    This is my DPMS Oracle with some mods to make it more versatile

    ForumRunner_20130918_171245.jpg



    ForumRunner_20130918_171304.jpg


    If u chose to buy it u should look into buying a better bolt carrier group as I did but that's all I found necessary to replace for internals
     
  14. JonM

    JonM Moderator

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    my best advice based on experience with many AR15. i currently have 5 ar15 and 1 in 22lr. ive sold 4 others that were of lesser quality.

    save up till you can get a good one. dont settle on a lesser rifle because of budget. instead of buying that (insert coffee/soda/beer/ciggarrette/cigar/pipe/mixed drink) every time you desire something outside water put that money into the AR15 fund. you will have the money in a month or two for whatever AR15 you want.

    my recomendation is go BCM upper for shtf or RRA upper for tack driving. whatever complete milspec lower you choose.
     
  15. purehavoc

    purehavoc New Member

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    If you dont have a problem building a lower and pinning on a upper It can be done as a quality build way under your budget

    http://palmettostatearmory.com/inde...ht-weight-chrome-lined-premium-rifle-kit.html

    Stripped lower These usually run $79 without the LPK This setup runs you a little over $600 shipped

    http://palmettostatearmory.com/inde...-picto-lower-and-classic-lower-parts-kit.html

    --------------------------------------------------------------------------------------------------------------------------------

    If you arent interested in building the lower you can buy it complete and surly you can push in the 2 pins to put the upper on the lower . This setup sets you back just a hair over $700 shipped but because of the deals you now have a extra LPK and those are nice to have for extra parts .

    http://palmettostatearmory.com/inde...complete-psa-ar-15-lower-classic-edition.html


    http://palmettostatearmory.com/inde...ht-weight-chrome-lined-premium-rifle-kit.html

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    If you dont have any intentions of building this is a quality AR that is the basic with a upgraded QMS trigger for $799 , carry handle is removable for optics later.

    http://palmettostatearmory.com/inde...ate-armory/pa-15-moe-qms-carbine-package.html
     
    Last edited: Sep 18, 2013
  16. Ruger_Nut

    Ruger_Nut New Member

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  17. purehavoc

    purehavoc New Member

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    Mine said in the 17 page manual that came with it a limited lifetime warranty
     
  18. thisbrucelee

    thisbrucelee New Member

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    Anyone has any experience with EP Lowers?? Eplowers.com
     
  19. purehavoc

    purehavoc New Member

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    no experience here , but $100 for a 80% poly lower??? NO THANKS!!!!!!
     
  20. DropZone889

    DropZone889 New Member

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    Everyone that auto slams poly lowers with NO first or even second hand account if a fool, my cousins brother sisters boyfriend blahhhh come on guys let's go be first hand account!!!!! I just built my first poly lower NFA using a RRA LPK ( one thin I stay far from is plastic FCG!!!!!!)
    And I just ran 240 rounds at the range the day before with NO problems what so ever and also got complements from a couple guys. Here is the deal : stick to a well make lower like NFA and use a a real good LPK NO Plastic!!! I have seen LPK parts break personally two times. I don't tip toe with my gun at the range and I love it, I even got 6 mags of Tula ready to shoot tommorow!!!!!
    BTW: I also have the Adams arms carbine piston kit installed and after I shot 240 the other day it looks as clean as it was before it was ever shot!

    I really hate when the haters automatically slam poly lowers when then haven't even touched one nor shot one, I'm sure this sounds the same when Glock first came out I bet!
    I didn't choose the lower it was the only thing around with out taking out a mortgage in January but I. The end it worked out GREAT! So please giver advice on knowledge not unverifiable option!

    B
     

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