First get acquainted with it. Then after you're familiar with it add a Power Custom Hammer, a "roll yur own" bolt release and bolt buffer and either an after market mag release or modify the existing alum factory release. None of this has to be expensive unless you want it to be.
Mag Release on the cheap & easy via the dremel....

OR
A mag release that functions with easy and remains aluminum rather than vinyl

Or
A bolt buffer that will out live a newborn can be made of simple 1/4" fuel line from your hardware store. Unless you like paying 5.00 /per in. for polyurethane rod from a vendor.
Save your money for a Green Mtn Barrel or equivalent and drive some tacks.
Afterall it's at least half the fun!!!!!
ZOBO