If you look at many sub machineguns and rifles carried by Police and Military, you'll find a nice little red dot sight sitting on top. Doesn't seem like that's an issue.
I didn't say it was difficult to attach a sight system, and it does allow you to use better sights than conventional pistol sights, however, those Aimpoints, Eotechs, and Acogs cost as much as the pistol underneath.
Adds to the cost.
You already own or issue a compatible pistol.
Was it free?
If not, then that is a part of the cost for this as a weapon, regardless of when or who pays it.
You can buy the ACP with a stock for $400, where do you get the extra $200?
I feel like reading the part of my post you quoted will answer your question quite handily. $200 was a guess based on the normal cost of decent quality or gimmicky but properly marketed stocks. I didn't know this device came with a stock as part of the base cost.
If you don't have a stamp before you buy it, maybe you want to buy one and try it out before you commit to creating an SBR like many tend to do with those Draco and AR-15 pistols, then you do have to buy a stock later.
Quote:
I can conceal my AK74 across my chest under my winter jacket, I could conceal this thing much easier.
I think you are intentionally being obtuse here. I also think, just based on your earlier size/weight comparison of the ACP to your rifle, where you conveniently forgot to include the dimensions and weight of anything other than the cage itself, that you aren't thinking through the position you are attaching your name to.
Sure, the ACP alone, or even with a pistol, is smaller and lighter than a carbine or even a TMP. Add a couple of pounds for the pistol, a little more if you go with the alloy framed models. Add some weight and considerable bulk (things that aren't all that bulky get that way with haste as you bolt them to each other) for the red dot up top, unless you go with one of the micro red dots.
Add a TON of bulk for the folding stock that'll about double the width of the thing.