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Thread: SBR Questions

  1. #1
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    SBR Questions

    I am contemplating an SBR set up and I honestly have no clue where to start. I was wondering about the basics. What is the best barrel length to have a balance between length and accuracy? What companies are good to look at? I know my question is vague but I don't know where to start. Thanks for the help.

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    Well your going to get 32,957.2 "best" set ups. So I'll add mine, LMT 10.5" DI upper and don't look back......
    FFL/SOT

    Chuck Norris has to maintain a concealed weapon license in all 50 states in order to legally wear pants.

  3. #3
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    Ill see if I can get a brief written before a mod tells you to do some searching, stop asking for handouts and closes the thread.

    Several factors must be considered in order to determine the ideal barrel length for your probable application(s):

    What will your targets' probable ranges be?

    Will you attach a suppressor and if so, will it extend rearward past the flash hider and interfere with whatever Gas Block/Front Sight Block and/or foregrip you plan to utilize?

    Are you okay with having to test different buffer/action spring combinations to determine which delivers the most reliable cycling?

    Decent manufacturers/dealers to buy from are just about the same as any other AR on the market... Noveske, Daniel Defense, LMT, BCM, Troy, etc... You cant really go wrong with any of them, that said I do have to cast my vote for a plain jane BCM 11.5". Its length offers compatibility with most suppressor/foregrip combinations as well as respectable reliability with a variety of buffer setups, its price is perfectly reasonable and it does not make use of proprietary or untested materials or manufacturing techniques. My 0.02.

  4. #4
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    First off....forget about length affecting accuracy...it doesnt.

    Velocity is what is affected.

    Two, what is the purpose of the rifle and why would an SBR suit your needs over a 16"? I dont need the answer, thats for you to ask yourself.

    "Because it is cool" should not be the deciding factor, people dont understand the commitment, not to mention money that goes into an SBR.
    Quote Originally Posted by Split66 View Post
    I wouldnt listen to BCMjunkie. His brown camo clashes like hell with his surroundings. His surroundings are obviously pinkish and lacey and have big hooties.

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    What caliber?

  6. #6
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    First, be sure that SBRs are legal in your state.

    Are you looking to build this rifle, or buy it ready-to-go?

    I've built two SBRs, both on 11.5 BCM barrels, with BCM BCGs and H2 buffers. I get 2443 fps from PMC Bronze (55gr .223). I chose 11.5 because, according to Paul at BCM, that length compared to 10.5 gives 40% more dwell time. Both rifles have run flawlessly from day one.

    If you're preference is to buy one assembled, I'd look at a 12.5 or 10.5 Noveske. If you think you might run a suppressor, get a Noveske with switchblock.

    http://noveskerifleworks.com/cgi-bin...ay.cgi?cat=176
    Last edited by Hmac; 06-06-12 at 06:04.

  7. #7
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    My advice is this. If they are legal in your state, then get a Colt 6933. They are good to go from the box.

    There are alot of things you need to know when building an SBR to make it run. Buffer type, springs, ammo, etc...

    If you get a BCM upper 99.9% sure that it will run assuming that you have educated yourself of what it takes to make that happen.

    1. BCM 11.5" upper receiver group (handguard or rail of your choice)

    2. BCM BCG.

    3. Vltor A5 kit with H4 buffer and green Springco spring.

    4. Lower reciever and parts. (quality of your choice).

    5. Stock (your choice).

    If you follow the basis of the above I am fairly confident that your SBR will perform as it should.

    Quote Originally Posted by TylerD View Post
    I am contemplating an SBR set up and I honestly have no clue where to start. I was wondering about the basics. What is the best barrel length to have a balance between length and accuracy? What companies are good to look at? I know my question is vague but I don't know where to start. Thanks for the help.



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    Colt 6933

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    Quote Originally Posted by Iraqgunz View Post
    My advice is this. If they are legal in your state, then get a Colt 6933. They are good to go from the box.
    Saved me some typing.
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  10. #10
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    Here is the progress I have made so far on my SBR:

    1. Form NFA trust using an attorney ($199)
    2. Purchased 2 virgin stripped lowers (PSA: 2@$99)
    3. Mail one lower out for engraving ($86.46 & waiting for return)
    4. Purchase Noveske 10.5" w/VIS & Switchblock ($1440 got it yesterday)
    5. Purchase various lower parts
    ....Geissele SSA Trigger ($170)
    ....Six 30 round Magpul Mags ($85.20)
    ....Hogue rubber grip ($16.34)
    ....UAG tactical oversized trigger guard ($13.50)
    ....Accu wedge ($3.29)
    ....PSA LPK & Six-Position stock kit ($112.90)
    ....Magpul CTR stock ($106.00)

    6. Complete & hold ATF form 1 (waiting to mail to be sure engraving is correct and that I don't F-UP the lower while building it out)
    7. Build 2nd lower out as a pistol so I can use my upper while I wait on the ATF (~7 months)

    After doing a ton of reading on the net, I selected Noveske because of reputation and high quality work. I selected the 10.5" with VIS & Switchblock because I plan to buy a suppressor some day. I wasn't concerned about the 10.5" because if Noveske is selling them, they likely work.

    I went the build route on the lower because I like to tinker. I would never attempt to build the upper - too much math for me.

    I have been wanting to go the SBR route for some time now (6 years??) and decided I should do something now before something bad happens with current gun/NFA laws.

    I have 5 additional complete lowers I need uppers for. Maybe next year for those....

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