Okay, time to admit I like RDS, and the pistol carbine should be an emulation of my 5.56 guns instead of something amusingly retro. Flat top, and a 7" alpha rail.
Since mine is pretty cheap, it only looks like a Colt at a distance, but runs like a top, I am gonna take it apart so I keep the bolt and barrel and so on.
- If I don't need a fixed front sight, I can just not put the FSB back, right? No gas system so it doesn't do anything but be a sight right?
- I am gonna do the gas diverter and half-sized dustcover. Since it will be random clutter, does anyone make a truly slick sided (no fwd assist, no brass deflector) upper with a pic rail?
- Do I need to time the barrel nut as though it has a gas tube passing through, or just tighten to the specified torque and not worry about where exactly it ends up?
- Anything else tricky to assemble a "subgun" upper I haven't though about?