All the photos of the 9mm AR's have had me salivating for some time - thanks, guys 
I really don't want to have to get into SBR forms and paperwork or the tax stamp cr@p, though. So I've been looking around for a 9mm A4 16" carbine upper where I could specify a low-profile gas block base instead of the A2 front sight. The reason being, at some point I'd probably want to install a fake can that extends from the muzzle back down the barrel to tuck under a railed HG. I know I could get an upper with an A2 FSB and just remove the sight, but why pay for it just to remove it, and pay for a low-profile base to install in its place? The railed HG will allow me to install a VG.
I see that RRA has a complete 9mm CAR upper where I can specify a gas block sight base and a DD 9.5 FSP. However, with the DD, that's an expensive upper! Does anyone know of an upper manufacturer that offers a good 9mm upper with a low-profile base and a railed HG for less money?
Also, I'd also have to get a mag well adapter to hold a 9mm magazine in a non-dedicated lower, correct? Any recommendations for that, or is the Spike's magwell block already the best option?
I really don't want to have to get into SBR forms and paperwork or the tax stamp cr@p, though. So I've been looking around for a 9mm A4 16" carbine upper where I could specify a low-profile gas block base instead of the A2 front sight. The reason being, at some point I'd probably want to install a fake can that extends from the muzzle back down the barrel to tuck under a railed HG. I know I could get an upper with an A2 FSB and just remove the sight, but why pay for it just to remove it, and pay for a low-profile base to install in its place? The railed HG will allow me to install a VG.
I see that RRA has a complete 9mm CAR upper where I can specify a gas block sight base and a DD 9.5 FSP. However, with the DD, that's an expensive upper! Does anyone know of an upper manufacturer that offers a good 9mm upper with a low-profile base and a railed HG for less money?
Also, I'd also have to get a mag well adapter to hold a 9mm magazine in a non-dedicated lower, correct? Any recommendations for that, or is the Spike's magwell block already the best option?
