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Matrix Ver.2 CNC AEG Ball Bearing Spring Guide + 7mm Metal Bearing + Piston Head Set

1 Customer Review

by Brian L. on 09/13/2013
"This is the best upgrade for the $$ for a KA P90. Beautiful parts. Head works well. Good seal. The spring guide fits perfectly and yes the KA uses all 7mm bushings so these bearings help a lot.

Overall this upgrade added 14-15 FPS and about 2 RPS. (Although i did have to re-shim when adding these bearings so be SURE to add a shim set when ordering this or your headed for grind city). Which for a very low cost upgrade /repair kit was better than expected. I'm guessing the fps came from the better Head and thicker base of the spring guide. The rps from re-shimming and better bearings.

NOTE: If you are ordering this for a KA /KS P90.... also get the tappit plate. No sense at all opening your gear box without throwing out the worthless plastic plate they put in stock.