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Old February 15th, 2013, 16:54   #7
666
 
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Join Date: Jul 2004
Location: Toronto, Ontario
I put Guarder tune up kit with Guarder clear hopup sleeve/bucking, PDI spring ( I heard now PDI springs are crap) in my TM AK converted into RPK years ago, 06-07 I think. It was shooting 400-407FPS at the time. Ran the thing until 2009 with a lot of bb's put through it since it was used mostly as support weapon. Put it in storage for 3 years. I opened mechbox past December to inspect/re grease before new season, 2-3 piston teeth slowed severe wearing so I replaced piston, otherwise everything looked just fine... I did pop can test since I don't have a chrono, bb went right through center of the bottom part.
I've been out of the loop for the past 4 years, but if Guarder is as good as it was before I'd go with it if I ever decide to buy another tune up kit.
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