Originally Posted by Love
Are there any modifications that I should do to my stock gearbox other than a bore-up kit, when I buy this barrel? (I'd rather know, so I don't risk like destroying my gun somehow.)
run it stock, with the bore up kit, until it breaks, then just buy this and swap in the bore up kit: http://www.airsoftparts.ca/store2/in...oducts_id=1163
and theguy is correct. use .25's at the least. they cost the same as .2's so why not? but, you'd be happier if you aim to use .28's.