Shooting coyotes at night seems to be the goal. That means a lightly scoped precision rifle, but not necessarily as described.
I'm looking for an AR to hunt with (Coyotes) and target pratice with, needs a collasible stock, flattop/quadrail to mount a flashlight and a good scope so i can get out to 200 yards so accuracy is important.
Specifying or building the rifle, take it in this order: barrel, bolt,optic, furniture, accessories. Working thru it, a standard 2MOA barrel is all you need for an 18" broad target at 200 yards. It will hit within 4" of the target point, unless you're saving fur. If it's head shots only, then a more expensive 1MOA barrel or better is needed. If you can use a decoy, just being closer solves that.
Having the bolt headspaced to the barrel is nice, but likely won't add much accuracy in this case. Next is optic, any good 2X7 should do. Since it seems likely night shooting is involved, and illuminated reticle would help, if the intensity is adjustable. Using one is better off an A3 upper, a riser and rings will likely be cantilevered over the handguard to prevent it moving around if attached to one. Slings will pull them around just like one mounted to a barrel.
Furniture, fixed A1/2 is all that's needed. Adjustable stocks are more expensive, rattle and creak, which is counterproductive when hunting. A standard grip will also do, it's not like handguns where a grip is the only connection. The rifle is supported at the shoulder and handguard, for 1 to 2MOA shooting, the grip won't help. Same for a quad rail - don't mount the optic to it at all, sling tension on it will move it. That's the point, the stress is taken up by the handguard, not by the barrel.
Attaching a light is simple, add a piece of rail to a tube and clamp it there. Where is important - if you use any front sight, it could shield the light and shadow the beam to one side. At 200 yards, it will also be either large and heavy, or quite expensive, you'll need something past 200 lumens. Another technique is to illuminate the decoy with a red light powered close to the target area, and wait for a clear shot in the zone. No dead weight on the gun, nothing to remove at the range. Others use a night vision scope, or simply hunt in good moonlight.
As for any other accessories, none needed. The standard control layout and a 10/20 round mag should do. At this point, a issue 16 to 20", A3 upper, scope, smooth free float with fixed stock would do. Which is what most varmint AR's sold are.
Not a M4gery with scope, rails, and bipod, which is what seems to be posted up all the time.
neener
