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Thread: The big 10.5"-12.5" general purpose pistol/SBR thread

  1. #51
    Quote Originally Posted by texasaggie2005 View Post
    Just finished putting this together today; 11.5" pistol with Geissele, Surefire, Trijicon, Magpul & SB Tactical. Can't wait to take it out.

    That's almost 100% the setup I'm putting together, I'm very interested to see how it runs. Any feed back you have would be appreciated.

  2. #52
    Quote Originally Posted by navyman8903 View Post
    That's almost 100% the setup I'm putting together, I'm very interested to see how it runs. Any feed back you have would be appreciated.
    This is my first short barrel AR, so I have nothing to compare it to.

    Put 200rds thru it last weekend at the local indoor range. Was only able to shoot at 27yds, so keep that in mind. But I was primarily just making sure everything was working right. Zero issues to report. 150rds of mixed Federal & Winchester 55gr, and 50rds of Federal Fusion 62gr. Various gen3 PMAGs fed great, extraction / ejection was good, recoil was no worse than my Colt 6720 or M4A1 upper. I did have the Super42 spring w/ H2 buffer, which seems to be the sweet spot. Accuracy, though at 27yds, was typical for 55gr fodder. It stacked the Fusion though when I did my part. I have one 10rd group that was dime sized. For me, with my eyesight and a red dot, and basic shooting skill, I'm happy with that.

    Overall, consider me a satisfied customer, especially for what I paid with the Black Friday deals.

  3. #53

    Optics:
    Nightforce NX8 MIL/LE capped turret model with MIL turrets and reticle in a Gissele plinko won 1.93" mount

    Type 1 Trijicon RMR 3.25 adjustable in Reptilia mount with two spacers for clearance

    Light/Laser:
    B.E. Meyers MAWL C1+ with EC2 cap

    Surefire DF 600 earlier R&D pro (pre-release) with DS-00 tail cap

    Unity Tactical Sync Version 1 for control

    Upper Components:
    Geissele stripped upper

    Geissele 11.5" duty barrel with bomb proof instillation of gas block

    ALG nitride BCG

    Geissele newer FED rail 10"

    Rail Scale HTP covers

    Surefire Warcomp

    Surefire SOCOM MINI suppresor

    Geissele Government CH

    Condition Gray sling retainer

    Lower Components:
    Knights Armament factory SBR lower (sold the upper long ago)

    Knights AMBI safety and trigger guard

    Geissele SD-C trigger

    Geissele Maritime bolt catch

    Geissele Super 42 spring with H2 buffer

    LAW tactical gen3 folder

    Magpul SL stock

    Tangodown BG-18 grip

    Sierra Tac sling

  4. #54
    Ready! Fire! Aim! awp_101's Avatar
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    Sep 2017
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    Got the BKF upper in short order, no pics yet but it looks good. Picked up a used 10.5" QC10 9mm barrel and a cheap handguard off the ARF EE this morning. Just need a hybrid bolt and then I'll start on that project.
    Nothing so needs reforming as other people's habits - Mark Twain

    Tact is the knack of making a point without making an enemy / Where is the wisdom we have lost in knowledge?

  5. #55
    Member snow white's Avatar
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    Oct 2016
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    So I still haven't settled on what upper I want to purchase for my recently approved sbr. I'm stuck between SOLGW and a PWS 111. I have heard piston guns tend to do better in an sbr roll. I dont have the experience with piston sbrs to confirm or deny this myself.

  6. #56
    Ready! Fire! Aim! awp_101's Avatar
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    Quote Originally Posted by snow white View Post
    I have heard piston guns tend to do better in an sbr roll. I dont have the experience with piston sbrs to confirm or deny this myself.
    I don't have the experience either but my understanding is "it depends". IIRC in Ian McCollum's interview with Larry Vickers, Vickers said the short DI guns were beating themselves to death in the constant high round count training done by Delta and that was the impetus for the HK416. I think he said something along the lines of pistons are an advantage in heavy use SBRs or if you're shooting lots of suppressed FA but I may have some of that mixed up with something else.
    Nothing so needs reforming as other people's habits - Mark Twain

    Tact is the knack of making a point without making an enemy / Where is the wisdom we have lost in knowledge?

  7. #57
    Quote Originally Posted by snow white View Post
    So I still haven't settled on what upper I want to purchase for my recently approved sbr. I'm stuck between SOLGW and a PWS 111. I have heard piston guns tend to do better in an sbr roll. I dont have the experience with piston sbrs to confirm or deny this myself.
    Direct gas systems have been refined to the point there's no reason to use a "piston" upper for a shorty AR. In fact, there's evidence that the direct gas system is the better choice for a suppressed shorty.
    We wish to thank the United Network Command for Law and Enforcement, without whose assistance this program would not have been possible.

  8. #58
    Member snow white's Avatar
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    Oct 2016
    Location
    Lakes region, New Hampshire
    Quote Originally Posted by MistWolf View Post
    Direct gas systems have been refined to the point there's no reason to use a "piston" upper for a shorty AR. In fact, there's evidence that the direct gas system is the better choice for a suppressed shorty.
    Interesting, thank you.

  9. #59
    Quote Originally Posted by MistWolf View Post
    there's evidence that the direct gas system is the better choice for a suppressed shorty.
    Please link or otherwise support your statement.

  10. #60
    Quote Originally Posted by hiro View Post
    Please link or otherwise support your statement.
    It used to be conventional wisdom that ARs as short as 10.5" 5.56 were picky about ammo and difficult to get running reliably. Now, with a better understanding of gas porting, correct buffer weighting and proper springs, shorty ARs have become easy to set up to run reliably without harsh recoil, even as a dedicated suppressor host. ARs are more refined now than they have ever been.

    Some shooters have found when suppressed, "piston" uppers (that is, an upper that has its piston located in the gas block instead of the carrier) has a louder port pop. They've also found that recoil tends to be harsher.

    With the introduction of the pistol arm brace, the popularity of short ARs has exploded. Many are used as suppressor hosts. Black River Tactical has even gone so far as to offer short barrels with gas ports optimized for a specific use, such as 100% suppressed. But of all the short ARs on the market and all the companies enticing customers with better and better mouse traps, there are very few with gas block pistons.
    We wish to thank the United Network Command for Law and Enforcement, without whose assistance this program would not have been possible.

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