RHT447 Posted May 13, 2019 Share Posted May 13, 2019 Just sharing some info that I hope some folks will find useful. This site is obviously dedicated to NRA Highpower Rifle. However, there is just a wealth of articles on many topics, including springs. All of them are in PDF format and free to download. http://www.zediker.com/default.html I have a Ruger Mk I standard 22 pistol that I bought new in 1974. Today it is pretty much "Kentucky Fried"--parts is parts--to include a SS AMT heavy barrel top end. I managed to snag the AMT before Ruger took offense and legal action--"I say lads, I believe that's our patent you're infringing on". Recently I had begun to notice a sharpness in the recoil, metal contacting metal. Obviously, the bolt was starting to slam into the bolt stop pin. So I got on of these kits-- https://volquartsen.com/inventory_configurations/1086 I simply installed it as it came with the standard weight spring. I went to the range and tested it out with this ammo-- https://www.brownells.com/ammunition/rimfire-ammo/superextra-high-velocity-ammo-22-long-rifle-40gr-cprn-prod82595.aspx?avs|Cartridge_1=AFF_22+Long+Rifle&avs|Manufacturer_1=aguila Flawless function, no more metal on metal. My main point is that this kit DOES in fact work for the MK I, even though Volquartsen does not list it. Link to comment Share on other sites More sharing options...
MattBaker5745 Posted May 16, 2019 Share Posted May 16, 2019 Thank you for the info. Appreciate it. Link to comment Share on other sites More sharing options...
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