aggiesundevil4 said:
curious if this really is the best way to get high capacity in a small package?
I'm not saying that the following suggestion is "the best way", but it certainly is a much cheaper, and equally effective way to get high capacity in a small package. Consider getting a gen. 3 Glock 17 and an ENDO stock adapter from Shockwavetechnologies.com. Add in either a buffer tube/brace, or a picatinny adapter w/folding stock/brace, and you will have a very small but high-cap package (that's what she said). In case you aren't familiar w/Glocks, they are extremely reliable, easy to work on, and are backed by a very large parts aftermarket. Mags are cheap and easily found as well. Easier to find that just about anything else, really.
I like the MP5 suggestion above, but be aware that an MP5 is full-auto, so *extremely* expensive. Easier and a whole lot cheaper would be the semi-auto version called the SP5. Also be aware that the SP5 and it's sister the "K" version is still larger and heavier than a G17 w/an ENDO/stock combo.
Another way to go is the Sig Sauer MPX Copperhead (not the "K" version). An extremely compact PDW, but IMO not worth the cost of admission, especially if you want to suppress it.
C