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Can you please explain this to me? I've read this in multiple places, but I thought blowback guns had fixed barrels.
They usually do, but having a barrel that tilts down slightly will make feeding easier with a long, narrow cartridge like .22 LR.
 
It is a blow back, no? The blow back is an aid to extraction. There are probably other ways to make it fail outside of its intended operational envelope.
 
If you cannot manual cycle, then if you have a dud and try to rack the slide you get a jam. After looking at the problem, the tip of the bullet is still in the chamber as the extractor tries to turn and eject the case. This lock up the slide. With just a case that is shorter, the ejector turns the case and eject. The ejector is too long, or Ruger did not plan on manual cycling. Mac
 
If you cannot manual cycle, then if you have a dud and try to rack the slide you get a jam. After looking at the problem, the tip of the bullet is still in the chamber as the extractor tries to turn and eject the case. This lock up the slide. With just a case that is shorter, the ejector turns the case and eject. The ejector is too long, or Ruger did not plan on manual cycling. Mac
 
So... I took a look at my LCPII in 22 with a round in the mag inserted. The nose of the bullet was level with the chamber which for the most part makes the ramp a needless entity. It may also explain why extracting a round manually with more rounds in the mag is problematic in that the next round in the mag exerts too much upward pressure on the round being extracted resulting in a jam.

By comparison in my LCPII .380 the round in a mag is more inline with the ramp allowing more room for the round being manually extracted to slide over the next round in the mag.
 
I'm sure part of that difference between the .22lr and 380 caliber models is due to the fixed barrel in the .22lr version.

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Performance Spring Kit for the LCP II 22lr Lite Rack
Introducing our newest Performance Spring Kit for the LCP II Lite Rack series of pistols. The concept behind the Lite Rack is fantastic, a small trainer for some and a high capacity semi automatic for those that want something small and lightweight for carry. However some of these little guys have issues with the 22lr round, so we came up with our spring kit to fix some of those issues. Included in the kit is a 10% increased rate hammer spring, to help hit that rimfire round harder. A 10% reduced power firing pin spring for stronger strikes from the increased rate hammer spring. Finally rounding out the kit, a 10% increased rate extractor spring to help those pistols with extraction issues. All of this is done without increasing the pull weight of the trigger, and is compatible with our Sigurd Short Stroke Trigger for the LCP II series of pistols. So become one with your gun and get yours today!
Fits Ruger™ LCP II 22lr Lite Rack Series of Pistols Only. Buy this problems solved Performance Spring Kit for Ruger LCP II Lite Rack Pistols

 
Got the spring kit minus trigger replacement. Holding the aluminum frame and all those teeny boingy parts together to get it back in the polymer frame is a patience challenge.

I'll see how it runs next time out to a range.

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I was having occasional light strike issues. Two out of three springs are for that. The extractor spring is a head scratcher....very different extractor than the 380.

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I was having occasional light strike issues. Two out of three springs are for that. The extractor spring is a head scratcher....very different extractor than the 380.

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Did the spring kit improve the gun? I took ours to the range over the weekend and I had Winchester Super X, Federal Automatch, and some old Remington Thunderbolts just for fun. Mine would not run the Winchester hardly at all. Numerous fail to fire in every magazine. I tried running the ones that did not fire back through the gun and they still did not fire, but they fired when I put them through my Taurus TX-22. Automatch ran better, but still had several that failed to fire and failed to eject when they did fire. Again, trouble rounds fired when loaded into my TX-22. Just for smiles and grins, I tried the Thunderbolts. Out of 50, I think I had one fail to fire and it still failed to fire in the Taurus.
 
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