I'm curious to see which Colt AR would you choose. An HBAR type rifle like the MT6601C or an M4 type with a shorter barrel, like the AR6721.
Which would you choose and why? Feel free to mention other Colt models, the benefits of shorter vs longer, car stock vs fixed stock, removable handles, etc.
Please, no off topic post, or comments like I'd go with Bushmaster/Rock River, or build my own. Those are not relevant to this discusion.
So, between these two type of Colt's, which would you choose and why?