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mstamper

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    Diamondback PCC DB9

    in Pistol Caliber Carbine

    Posted · Edited by mstamper

    I shot one for over a year.

    Overall it was a great gun. 

    I changed out the trigger to a Hiperfire right away. the MIL SPEC sucks

     

    I changed out the buffer system to a blitzkrieg hydraulic and a flat spring 308. 

     

    I loved it till I also bought a PSA AR9. I was having issues with the PSA ejector was not working right. I moved my DB9 bolt over to the psa and fubared it up as well. I had to order a new bolt and ejector from Diamond back. They sent them out under warranty. I moved the PSA bolt over to the DB9 (not compatible) I bent the ejector in both guns. Replaced the DB9 bolt and ejector and it ran like a top. 

    I sold it for a sig MPX. If you are looking to get an AR9 and don't mind spending some more cash to change out and try out buffer and spring combos to find what works best for you, it is a great gun. I was new to pcc when I bought it and almost made A class in USPSA with it. 

     

    Only other thing I had happen was I broke the firing pin spring. easy fix. 

     

    There is NOT a magwell for the gun. the opening is slightly flared and if you practice you can get quick with the reloads. I had a buddy who was shooting a JP with a magwell on his, say I did the fastest mag change he had ever seen for someone with out a magwell. 

     

    SIG MPX failure to eject

    in Pistol Caliber Carbine

    Posted

    Or, just buy BCM Extra Power springs, which also come with the right o-ring. 
    Buying direct, it's about $19 for a set of three including prompt shipping.
     
    Some folks have had luck with running just the extra power spring. Some have been able to squeeze in the spring + O-ring. 
    Link to the part please


    Sent from my LG-H872 using Tapatalk

    SIG MPX failure to eject

    in Pistol Caliber Carbine

    Posted

    On 6/4/2019 at 11:44 AM, zdog said:

    There is one other change that Sig made to my gen 2 when it was in the the faulure to eject problem.  When it came home it had the red heavy duty extractor spring and they also put an O’Ring around the extractor spring.  That really tightened things up.  And for what its worth when my new competition model showed up it had the same red extractor spring with an O’Ring on it as original equipment.

    could you take some measurements of that o-ring? I have had a few failure to eject cases and I would like to try the o-ring to see if that helps.

    Not sure where I would buy that small an o-ring but at least having the measurements would help start me in the right direction.

     

    I wonder if SIG would sell them? hmmmm

    .356 or .355 diameter 9mm for a SIG MPX

    in Pistol Caliber Carbine

    Posted

    15 minutes ago, Acer2428 said:

    Try it. a bag of bullets is cheap. No one going to be able to tell you what your gun is going to like. 

    I get that. I was more wondering if .001 diameter difference in the grand scheme of things is really worth the effort.

     

    I know a lot of guys who are running blazer 115 factory plated and love it. I like to reload and like the blue bullets. I also like to not be at the whim of a ammo manufacturer if they decide to change the load or weight or anything else with their rounds and now I have an issue.

    Cleaning glock PCC mags and goliath woes

    in Pistol Caliber Carbine

    Posted

    50 minutes ago, PigSnowball said:

    I've found there's a LOT of crap blasted into the mag. I didn't initially realize until I started getting misfeeds about 400 rounds in without a mag clean.

     

    1. How the heck do you "easily" pull the +2 extension off the 31rd glock mags for cleaning? It's hell!

    2. Is there a good base pad to facilitate easy disassemble and still get the +2 or more?

    3. I already have the goliath, and it's great for disassembly and cleaning. But it's picky with ammo it seems. Completely fails to lift steel cased ammo. Also doesn't seem to feed blazer brass 115gr which has cost me 2 matches. I like the goliath generally speaking, ordered a batch of S&B that I hope it likes... I could really use something in the some 40 range of extension, that isn't picky with feeding ammo and is easy to clean. I don't need +20 most of the time and want a bump in reliability, I think standard glock 31+2 mags would do fine if they were easier to clean.

    Robin Taylor specifically states that the longest OAL is 1.125 for any of the basepads to work properly. I have had luck going out to 1.13. If the blazer is longer than that you will have feed issues. 

    45 Degree Safety Selector - Worthwhile for PCC?

    in Pistol Caliber Carbine

    Posted

    35 minutes ago, longbeard said:

    What you are describing doesn't sound like a well-functioning safety.  It shouldn't be difficult to flip off.  Are you positive it doesn't need tuned a bit?  My JP requires some oil from time to time. 

    FOR ME, it was not so much that the safety was not well-functioning, it was more a fact that as I engaged the safety my thumb would come off the lever as I was shouldering the weapon and assume a proper grip and I had not put enough pressure on the lever to fully move it past the detent pin. Going to a shorter throw lever allowed me to get past the detent and fully put the safety into the fire position.

    45 Degree Safety Selector - Worthwhile for PCC?

    in Pistol Caliber Carbine

    Posted

    I had the Radian on my blowback pcc using a Hiperfire 24-3g and a 24c trigger. never had any issues.

    I am shooting a SIG Mpx now with a 90 degree ambi safety. 

     

    the reason I went to a 45 degree safety was that coming off the belt, several times I had not fully gotten the safety to the fire position. Once I changed over that went away.

    So far, on the MPX I have only had it happen 2x. In USPSA, that time lost re-engaging the safety can be the difference between a top 10 finish or not.

    I will most likely be moving over to the radian on my MPX as soon as I can get more cash together.

    Cz75 25 round mag

    in USPSA/IPSC Rules

    Posted

    Does anyone know if the 25 round cz75 9mm mags are legal for USPSA limited? I have 16  round mags was looking for 18 to 20 round mags.
    I don't have the rule book in front out me. That being said, you can go to the uspsa website and look up the rule for the class you shoot (production, limited, open) and you will see how long your mags can be and still be legal.

    If you're shooting production, you are limited to 10 rounds per mag regardless.

    Sent from my LG-H872 using Tapatalk

    A different red dot Q: UH-1 or two red dots?

    in Pistol Caliber Carbine

    Posted

    46 minutes ago, funkymonkey1111 said:

    Figured this question was specific enough that I'd start a new thread:

     

    I've watched Josh Froelich's JP video where he is using two red dots--specifically the offset one for hard weak-side leans (and shooting over barriers on low shots).   I've also seen comments that larger windowed optics, such as the Vortex UH-1, perhaps lessens the need for two smaller reflex optics.   

     

    Ultimately, has anyone played around with the double red dot and found it superior?   Or, have you used a UH-1 (or other larger windowed optics such as an EOTech or Holosun 510c) and found it is good enough for weak-side leans?

     

    What say you?

     

    Thanks

    I have tried using a 45 degree offset optic along with my primary optic.

    I gave up on using it. I just learned my hold over for close in shots (or I used my laser sight) and if I had a weak side lean I would transfer the gun over to my weak shoulder while in transition to that shooting location. I have learned to do that transfer rather quickly and to close my right eye to allow my left eye to acquire the dot.

    Reporting PCC results separately

    in USPSA/IPSC Shooting

    Posted

    On 1/22/2019 at 11:03 AM, HoMiE said:

    It’s US Practical  Shooting Association not Pistol Shooting Association. I don’t agree with the yeah you won bringing a rifle to a pistol match hyperbole. If you shoot and move slow with a pistol, bringing a pcc to a match isn’t going to bring you GM status and hOA. And the hey lets make hard leans to slow the pcc shooters down doesn’t do anything but separate the fast shooters from the slower ones. 

    agree. I shoot pcc because of injuries that prevent me from shooting a pistol well enough to be competitive. If it were not for PCC I would not be shooting now.

    AND the P in USPSA does NOT stand for pistol. SO if I find pcc to be practical in my shooting then I fit the the definition of USPSA 

    smaller diameter MPX handguard

    in Pistol Caliber Carbine

    Posted

    Measuring from the lower half of the muzzle end:
     
    To the far end of the hand guard is 15.75 inches
     
    To the point where the top of the receiver ends is 12.125 inches
     
    I don't have a scale, but in a other thread I saw the weight listed as 11.2 ounces
    What is the OAL diameter?

    Sent from my LG-H872 using Tapatalk

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