Page 2 of 2 FirstFirst 12
Results 11 to 14 of 14

Thread: Gas system and upper building questions.

  1. #11
    Join Date
    Jan 2013
    Posts
    290
    Feedback Score
    0
    Carbine v middy? Been done repeatedly. Here's a good link that links to several good links...

    http://m4carbine.net/showthread.php?...carbine+length

    I read up on this subject until it was coming out my ears; my takeaway was this: buy from a high quality builder and the carbine v middy debate ultimately won't amount to much.

  2. #12
    Join Date
    Mar 2010
    Location
    XXX
    Posts
    1,847
    Feedback Score
    0
    I like the middys better as over the years I have had both, A quality manufacture makes both carbines and middys reliable enough. Keep the S@W as is and save up for a BCM,Daniel defense etc. Everyone needs at least 2 ARs.

  3. #13
    Join Date
    Aug 2009
    Location
    NorthWest USA
    Posts
    704
    Feedback Score
    0
    I like the two AR approach too. Get a BCM midlength upper now to swap with your S&W upper then build up a quality lower for the BCM upper so you can marry back the S&W receivers.
    US Army 1966-69, VFW Life Member, Retired Geek

  4. #14
    Join Date
    May 2010
    Location
    midwest
    Posts
    8,217
    Feedback Score
    4 (100%)
    Quote Originally Posted by taekwondopreacher View Post
    I currently own a M&P15 (I bought it in 2008 before I understood much about ARs) with the 1/9 twist. I've been thinking about upgrading the barrel to something with a 1/7 twist, and was looking for some input.
    Is going to a mid-length gas system a big enough deal to justify the extra parts needed? I'm set on my next AR being a mid-length 16" gun from BCM or DD. Do mid-length guns really run that much smoother? Anyone own both a carbine and a mid-length system?
    The other thing I'm wondering is if any of the M&P15 upper is suitable for using as part of a new build. Would it be feasible to install a new barrel on the M&P upper receiver, or am I wasting time buying anything less than a complete upper?
    Thanks.
    I don't think either the 1:7 twist or the mid-length gas system offer any significant advantage over what you already have. Mid-lengths don't run any smoother. They extend the recoil impulse a little bit, but 5.56 isn't exactly a punishing round, and as a percentage of the total the difference isn't much, and in practical terms barely noticeable, if at all.

    As to the twist rate..are you finding accuracy problems with 77-grain bullets?

Page 2 of 2 FirstFirst 12

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •