Cm.708 upgrades

[Simonwwfc]

Picked up a brand new cm.708 cheap with bipod and scopes to have a go at sniping before buying a more expensive gun . Now can this be upgraded in any way ? 

[Tiercel]

Not been able to find much info on them, Reddit seems to think they're mostly proprietary internals with some APS2 compatible internals rather than VSR. Not a whole lot of upgrade options out there. Though they do say it uses AEG hop bucking & barrel so you could slap a better hop rubber in it easily and see if that offers any gains. Beyond that probably not much you can do, apart from your basics like making sure all air seals are good and everything is nice and clean, light and lubed.