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Thread: Ideas why I've got poor shot dispersion from CZ Scorpion?

  1. #11
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    Quote Originally Posted by Circle_10 View Post
    Was this your first time shooting it? YES I’ll have to check mine before I shoot it now.
    I had shot a few (like 10 or 15 rounds) through it , mainly to test the binary trigger. As far as a more "lengthy" shooting session? Definitely not.
    Last edited by ABNAK; 03-08-21 at 19:55.
    11C2P '83-'87
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  2. #12
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    Quote Originally Posted by ABNAK View Post
    I had shot a few (like 10 or 15 rounds) through it , mainly to test the binary trigger. As far as a more "lengthy" shooting session? Definitely not.
    That’s what I figured based on your original post, but I thought maybe it could have loosened up from a lot of shooting but it sounds like it was probably loose from the factory.

  3. #13
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    I've got an original pistol SBR'd and suppressed with a Sig SRD-45 can. It's a tack driver so much so my buddy and I play battleship on targets @ 25yard at the local indoor range. 158gr Fiocci is my round choice and I've got about 3K through it already.

    I've heard of the loose parts before, which is probably the cause as most have already stated. Mine were tossed almost immediately as my Eform 1 came back in less than a month and suppressor could be shot at the range while I waited for approval. I changed the grip, OEM angle wasn't right for me and topped with an MRO.

  4. #14
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    Ammo?

    My Colt ar6951 shoots buckshot patterns with 147 grain. It shoots groups with 124.

  5. #15
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    Quote Originally Posted by Uni-Vibe View Post
    Ammo?

    My Colt ar6951 shoots buckshot patterns with 147 grain. It shoots groups with 124.
    From what I’ve read, Scorpions seem to do well with 147s. Which I hope to be the case as my plan is to use 147gr HSTs in it, which is the same load I use in my handguns. If the results aren’t great I’ll try a lighter load, not a big deal, just using the same load for handgun and PCC would be convenient.
    Although for some reason I can’t stop my brain from thinking I’m simply going to just “get more” 9mm....

  6. #16
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    Quote Originally Posted by ABNAK View Post
    Thanks for the info! When I took the FH off the thread protector came off inside of it.

    Oh, and I had to beat the protector out of the FH with a hammer and punch. It had a palpable and visible thin bulge on one side (like a thin raised "ridge" running maybe 1/4 of the way around).

    Looked inside the FH from the rear and saw some bare metal marks all around the front inside lip of the FH. Hmmm......ordered a 9mm 1/2x28 A2 FH and crush washer. I found the factory-supplied thread protector for the "upper deck" threads (if you know what I'm talking about). Once the stuff gets here I will shoot 'er again!

    Once again, thanks slimedog. I would have eventually gotten to the muzzle area early on in the "investigation" but your info had me straight skip ahead to the apparent issue.
    No problem. Some folks on the CZ forum have had good luck with o-rings instead of loctite. Eventually, I'll just get an actual flash hider with a crush washer and throw stock parts in the trash.

    As others have said, the HB Industries trigger spring and trigger are excellent. Of course, you'll want to replace the manual safety - I just don't understand how they went with that design from the factory, unless nobody at CZ ever actually test fired one. I've never had a firearm that physically hurt my hand during firing until the Scorpion. I used the Parker Mountain part:

    https://www.parkermountainmachine.co...or_Levers.html

    After those changes, the Scorpion a fun little gun. Not as fun as a Banshee, though, IMHO... ;-)

  7. #17
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    Quote Originally Posted by slimedog View Post
    No problem. Some folks on the CZ forum have had good luck with o-rings instead of loctite. Eventually, I'll just get an actual flash hider with a crush washer and throw stock parts in the trash.

    As others have said, the HB Industries trigger spring and trigger are excellent. Of course, you'll want to replace the manual safety - I just don't understand how they went with that design from the factory, unless nobody at CZ ever actually test fired one. I've never had a firearm that physically hurt my hand during firing until the Scorpion. I used the Parker Mountain part:

    https://www.parkermountainmachine.co...or_Levers.html

    After those changes, the Scorpion a fun little gun. Not as fun as a Banshee, though, IMHO... ;-)
    While obviously nowhere near as ubiquitous as the MP5 the select-fire variant of the Scorpion has been adopted by enough police and military forces internationally that you’d think someone would have caught on that the OEM right-side safety is terrible. But I’ve actually looked around at pics of the Scorpion in the hands of foreign LE/military trying to see if they had the stock safeties on them and in the pics where the selector was visible it appeared to be stock and unmodified. So my only real guess is that most users are either standing around at airports or something with their Scorps slung and on “safe” all the time or when the guns are getting fired they are mostly being switched straight to burst or full auto, and in either case the positions of the safety relative to the user’s hand perhaps doesn’t gouge like it does when in the semi position. so maybe they aren’t noticing the issue as much?
    Last edited by Circle_10; 03-09-21 at 14:23.

  8. #18
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    Quote Originally Posted by ABNAK View Post
    Thanks for the info! When I took the FH off the thread protector came off inside of it.

    Oh, and I had to beat the protector out of the FH with a hammer and punch. It had a palpable and visible thin bulge on one side (like a thin raised "ridge" running maybe 1/4 of the way around).

    Looked inside the FH from the rear and saw some bare metal marks all around the front inside lip of the FH. Hmmm......ordered a 9mm 1/2x28 A2 FH and crush washer. I found the factory-supplied thread protector for the "upper deck" threads (if you know what I'm talking about). Once the stuff gets here I will shoot 'er again!

    Once again, thanks slimedog. I would have eventually gotten to the muzzle area early on in the "investigation" but your info had me straight skip ahead to the apparent issue.
    Screw all that, it is set up for a suppressor. Get a suppressor.
    It's hard to be a ACLU hating, philosophically Libertarian, socially liberal, fiscally conservative, scientifically grounded, agnostic, porn admiring gun owner who believes in self determination.

    Chuck, we miss ya man.

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  9. #19
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    Quote Originally Posted by Uni-Vibe View Post
    Ammo?

    My Colt ar6951 shoots buckshot patterns with 147 grain. It shoots groups with 124.
    Something is very wrong with that rifle.
    It's hard to be a ACLU hating, philosophically Libertarian, socially liberal, fiscally conservative, scientifically grounded, agnostic, porn admiring gun owner who believes in self determination.

    Chuck, we miss ya man.

    كافر

  10. #20
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    Quote Originally Posted by SteyrAUG View Post
    Something is very wrong with that rifle.
    No, this is common with 9mm PCCS. My Cx4 does the same thing. Quite accurate with 115 and 124, not so good with 147 grain stuff. Nothing wrong with the Colt.

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