PSA 9mm Carbine...

pwillie

January 04, 2019 18:09

...fells to eject after 1-3 rnds fired...so,what can be the cause?...I am using the right mags and good ammo(NATO)...

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  Ricci Wright

  January 04, 2019 18:37

  That?s a blowback. Have you got the right buffer spring?? Has it always done this or did it just start?? Is it ejecting the fired case?? If not it could be a broken or worn extractor. I?m sure you have made sure it?s clean and lubed.

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  rufe-snow

  January 04, 2019 20:51

  I built one last summer. The buffer spring and weight are very critical. As it's a purely blowback mechanism. The velocity of the buffer/spring has to controlled for proper function.
  
  Some folks use a pile of quarters, as a spacer underneath the rear of the buffer spring. To slow down the buffer, to limit its return velocity. I made my own. with a 3/8 wooden dowel, 7/8" length. Wrap it with duct tape so it will be the proper diameter. To just fit inside the buffer spring.

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  llama

  January 05, 2019 04:06

  Used their complete glock mag lower and built my own upper, no issues with mine.
  
  From what I recall of what I read before buying and building up mine is that some folks had issues with the ejector not being in the quite right spot. Its that squared off in-the-white piece sticking up out of the receiver to the left of the mag release -
  
  
  
  And should be straight and on the far left of the receiver -
  
  
  
  
  So post some more details - complete PSA, or what. What bolt are you using, what recoil spring, bolt buffer, etc

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  babun

  January 05, 2019 05:24

  9 MM NATO ammo is hotter than almost every USA made "sporting"
  ammo.
  Try some cheap 115grain US ammo instead of the high pressure
  124 grain NATO stuff.
  
  Maybe like the M1 Garands liking 147/150 gr. bullets at
  certain powder burn rate to function well.

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  babun

  January 05, 2019 05:29

  quote:Originally posted by babun
  9 MM NATO ammo is hotter than almost every USA made "sporting"
  ammo.
  Try some cheap 115grain US ammo instead of the high pressure
  124 grain NATO stuff.
  
  Maybe like the M1 Garands liking 147/150 gr. bullets at
  certain powder burn rate to function well.
  https://www.alloutdoor.com/2014/10/01/winchester-9mm-nato-bulk-ammo-bad-pistol/

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  Ricci Wright

  January 05, 2019 12:18

  You should check and make sure it?s not gummed up with shrimp and grits from lunch. [:)]

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  pwillie

  January 06, 2019 15:54

  thanks folks.....

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  Kenneth Stuart

  January 09, 2019 17:51

  After giving the chamber, bolt face and extractor a good cleaning and lube. Try Blazer 9mm with the aluminum case. The anodized aluminum case feeds and ejects even in rough chambers.

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  Bill DeShivs

  January 09, 2019 21:46

  Aluminum cased ammunition is not anodized.
  Anodizing leaves a finish that is aluminum oxide. It's hard. It's what they make grinding wheels and whetstones out of. Wouldn't do your chamber much good.

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  Kenneth Stuart

  January 10, 2019 15:31

  Believe it or not I first wrote oxidized aluminum finish then changed to anodized finish when I read that anodizing aluminum is a controlled industrial oxidation process to create a surface layer which resists corrosion better than the bare metal. Either way the surface is super slick and I've never had problems feeding, sticking, extracting, and ejecting Blazer FMJs even in old very finicky Lugers. Because I knew they were reliable, I've even gone as far as carefully pulling the Blazer's FMJ bullets replacing them with better bullets and still get no problems.

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