These AR pistols are becoming a thing these days. I have a variety of AR type weapons, but for a truck gun, I’m really liking my 16” AR-9. It has all the tactical furniture the above gun does, but it’s a lighter smaller action gun in 9mm. What I think puts it above the 5.56 for a defense gun is that uses 33 round Glock magazines. And, that “longer than pistol length” barrel makes those 9mm rounds really zip along. I shoot 9x19 NATO spec 124 grain rounds out of it, and I bet those dudes are approaching 1500 fps muzzle velocity. Sighted in for 50 yards, it shoots within a couple inches of point-of-aim at 25 yards and 100 yards. And, I can hit a 12” steel plate with it at 200 yards every shot. I have a .308 rifle dueling tree with 3/8 thick 12” plates on it, and it’s the only pistol caliber weapon I have besides my .45 ACP that can swing those big plates over at 25 yards.