Thanks for all the input first time I inquired some time ago.
#1. The barrel in the M17... is it interchangeable with other AR-type barrels, or is it very specific to this design? Just curious.
#2. I noticed that on a few photos, guys are removing the carrying-handle and putting the picatinny rail right on the rifle - why? I thought the inherent ergonomics of a bullpup mandated an elevated sight platform. The AUG, M17s, and a couple others I've seen all have their stock sights elevated. When I finally purchase mine, I will probably plunge headlong into mods and upgrades, but I want to know the reason for removing the carrying handle before doing so.
Thanks in advance.