by C0L0N3L $aNd3rS » Sat Dec 31, 2011 6:47 pm
Pretty much the only internal upgrades are a low power bolt and a tightbore barrel, which can be found on the KWA pro shop website. External wise, there are MP7 specific silencers, optics, lights, pretty much the sky is the limit. It really comes down to personal preference and what you want your gun to do.