Quantcast
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

thinking about building an ar, any help?

Discussion in 'Rifle Country' started by Poolie01, Mar 14, 2008.

Thread Status:
Not open for further replies.
  1. Poolie01

    Poolie01 Member

    Joined:
    Mar 12, 2008
    Messages:
    10
    i just got a colt sp2 for fairly cheap but now i realy want to build a full size
    ar15a4/m16a4. i realy want a colt upper but they are ungodly expencive. the reason i want a colt is because they are generaly mil spec. and my two colts that i have are by far the best guns ive ever owned and would love to have as many colt parts on the build as posible. i was thinking an lmt lower. should i save up for this or is there a good alternitive? i at least want a colt barrel on the upper? any sugestions?
     
  2. Poolie01

    Poolie01 Member

    Joined:
    Mar 12, 2008
    Messages:
    10
    oops messaged myself
     
  3. HOLY DIVER

    HOLY DIVER Member

    Joined:
    Jan 1, 2008
    Messages:
    1,041
    Location:
    spartanburg,SC
    dpms,olympic,stag,rra,bushy who ever offers the better deal on the lower there all the same
     
  4. Kurt_D

    Kurt_D Member

    Joined:
    May 23, 2007
    Messages:
    400
    Location:
    Louisiana
    You know what the funny thing is? Most other manufacturers, concerning the lower reciever, are more "mil-spec*" than Colt. Colt uses larger FCG pins and often have a sear block.

    Anyway, pick a quality reciever from, Armalite, Bushmaster, RRA, Stag, CMMG, Saber, or who ever has the logo you want. You can peice the rest together using what ever you want. You can find Colt barrels (not that they're better but if its what you want), uppers, BCG, etc on AR15.com's EE.

    Colt does MPI test their bolts which is nice; I would get either one of theirs or a MPI tested one from LMT or CMT.

    *I realize there is not a "mil-spec" for AR15.
     
  5. Soybomb

    Soybomb Member

    Joined:
    Oct 31, 2005
    Messages:
    3,959
    A small difference to point out, CMT does MPI their bolts but of that list only LMT and Colt fire a proof load from them first. Many people who seem more qualified than me have told me that proof shot is what makes the MPI worthwhile.

    To the OP. Any reputable lower would be fine.
     
  6. Boanerges57

    Boanerges57 Member

    Joined:
    Jun 20, 2007
    Messages:
    85
    Location:
    Wisconsin
    FN uppers are mil spec and dont have the need for the push pin adapters to fit another brand of lower.... unless you put a colt lower on one.
     
  7. MassMark

    MassMark Member

    Joined:
    Mar 20, 2007
    Messages:
    732
    Location:
    Western MA
    Noveske, Colt, LMT, Anvil - just off the top of my head.
     
  8. Poolie01

    Poolie01 Member

    Joined:
    Mar 12, 2008
    Messages:
    10
    do any of those companys have an exeptionaly tight fit between upper and lower? im looking for a perfect fit, my ar that i have now shakes like a rattle snakes tail. i hate that wobbley sound. any sugestions?
     
  9. Kurt_D

    Kurt_D Member

    Joined:
    May 23, 2007
    Messages:
    400
    Location:
    Louisiana
    I didn't know that. It would make sense the testing would be more accurate after a proof load.



    There's really no way to guarntee a really tight upper/lower fit unless you can find a matched set. I've heard RRA's uppers are spec. a little wider at the take-down pins to fit tighter but I don't have any first hand knowledge. There are options though if it bugs you enough; the accu-wedge thing and some special take-down pin replacements.
     
  10. gunman42782

    gunman42782 Member

    Joined:
    Jun 30, 2007
    Messages:
    340
    Location:
    KY
    IT is not as well known as some of the above mentioned companies, but I have had outstanding results from my Double Star lower. I built a M-4gery from it and a kit from Del-Ton and have been completely satisified.
     
  11. Zach S

    Zach S Member

    Joined:
    Jun 30, 2003
    Messages:
    5,515
    Location:
    Western NC/East TN
    I have an RRA upper that out of spec, and the upper/lower cant get any tighter. I have to tap the rear pin out with a punch and a magazine (imrprovised hammer).

    I dont think a tight fit really means anything anyway. Just a way to ask more for a matched upper and lower.
     
  12. rooter

    rooter member

    Joined:
    Feb 22, 2008
    Messages:
    223
    Check out the M&A website FAQ section, there is a wealth of info there.
     
Thread Status:
Not open for further replies.

Share This Page