Deciding to dive into the deep end of the pool...5.56 or 300 BLK Out?

The #1 community for Gun Owners in Indiana

Member Benefits:

  • Fewer Ads!
  • Discuss all aspects of firearm ownership
  • Discuss anti-gun legislation
  • Buy, sell, and trade in the classified section
  • Chat with Local gun shops, ranges, trainers & other businesses
  • Discover free outdoor shooting areas
  • View up to date on firearm-related events
  • Share photos & video with other members
  • ...and so much more!
  • FWJK

    Marksman
    Rating - 100%
    33   0   0
    Feb 2, 2016
    249
    18
    Fort Wayne
    I am just about decided that I would like to purchase a Daniel Defense SBR to go along with my DDM4 V11 rifle. I missed the deadline - so will have to do it the new way. I am ok with that.

    My dilemma is one of calibers. I was initially leaning 5.56 - for the sake of familiarity and consolidation of ammo. Also the cost of the ammo for training. Seems like it might be easier to just stay with the 5.56 and be able to share ammo between rifles.

    That being said - have also been considering the 300 blackout version also. My other two rifles are both 5.56. Do I really need something with more oomph? Am I crazy to stay with 5.56 and call it a day? What I want to avoid is spending a couple of thousand on the SBR and possibly a suppressor along with the stamps and then wish I would have bought the other caliber.

    I have been on a bit of a buying spree over the last few months - so I can't buy both or I will have to deal with she who must be obeyed and possibly find myself banished to the couch for perpetuity. :dunno:

    My intention of the SBR is home defense/training and some range fun. I have a Trijicon MRO that would be mounted on it and I would probably like to add a suppressor to it as well.

    I am a complete novice when it comes to these types. Was hoping for opinions, comments, advice and all posts are welcome. :ingo:
     

    KJQ6945

    Grandmaster
    Site Supporter
    Rating - 100%
    4   0   0
    Aug 5, 2012
    37,538
    149
    Texas
    I don't reload, so I have avoided going the .300 route. It would be an expensive caliber to stock. I went with a 10.3" 5.56. It will never be as quiet as .300, but I've got a few pistol caliber SBRs that are, and a whole lot cheaper to shoot.
     

    Hop

    Grandmaster
    Site Supporter
    Rating - 100%
    16   0   0
    Jan 21, 2008
    5,084
    83
    Indy
    I run a Saker 762 on mine. One upper is a DD MK18 5.56mm 10.3" w/ a 556 brake. The 300BLK has a 762 brake. The Saker can easily move from upper to upper & works great.

    The brake / MAAD mount system isn't exactly light. I can feel it out there when swinging target to target. A direct thread would be lighter but If you have multiple guns you'll want a QD style mount for sure.
     

    Foxfire

    Plinker
    Rating - 80%
    4   1   0
    Aug 18, 2010
    120
    18
    Seymour
    "Multi- caliber"
    I don't think it matters when SBRing an AR receiver.
    Once you have the stamp you can swap barrel lengths and calibers.

    This is what I read/was told years ago when I did mine.
    Please correct me if I'm wrong.
     

    Tbell7

    Sharpshooter
    Rating - 100%
    39   0   0
    Aug 21, 2021
    405
    43
    Indianapolis
    Fun round, especially the sub sonic...just saying my friend.
     

    Attachments

    • 20220520_185520.jpg
      20220520_185520.jpg
      300.9 KB · Views: 7
    • 20220520_185551.jpg
      20220520_185551.jpg
      331.6 KB · Views: 7

    Hop

    Grandmaster
    Site Supporter
    Rating - 100%
    16   0   0
    Jan 21, 2008
    5,084
    83
    Indy
    Necro post alert!

    I sold my MK18 upper and built a lighter 11.5" BCM upper.

    Oh, and just blew out a primer from a supersonic round while suppressed. The primer jammed itself into my gas key / carrier. I couldn't get it out. Noveske fixed it for me.

    Sent from my SM-G998U using Tapatalk
     
    Top Bottom