Armyjoe127 Posted January 8, 2014 Share Posted January 8, 2014 I have a classic army m15a4 cqb sportsline premium what can i do to improve its performance and at what cost , thx Link to comment Share on other sites More sharing options...
Russe11 Posted January 8, 2014 Share Posted January 8, 2014 Why does it need upgrading? Link to comment Share on other sites More sharing options...
sunstar Posted January 10, 2014 Share Posted January 10, 2014 1: Sportsline models come with plastic bushings on the gears ... Change them before the gun fails!!! Instead of mking a long list with details ( That a going to be long and complicated ) I will reccomend you looking at som upgrade "guides" .. like this one... http://airsoft.spells.dk/Guides.cshtml?Page=AEGUpgrade_Page1 Link to comment Share on other sites More sharing options...
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