Originally Posted by TwoHandRevy
Okay here we go:
1) The range that I use is an outdoor range on conservation ground. There are only four ranges there to use: 25 yard, 75 yard, 100 yard, and clay pigeon. Therefore, I need something that is effective for precision target shooting on the three distance ranges with both iron sights and magnification equipment. Perhaps if I find a range with a greater distance I would use the rifle for that as well. I also want the rifle to have the ability to take some abuse when it comes to the off chance of spending the day wasting a large amount of ammunition just for fun.
2) I prefer shotguns when it comes to defending my home, and I am currently trying to get my hands on a Mossberg 500 to fill that role. However, I wouldn't mind having the AR as an option to fall back on, and use to deal with an intruder effectively.
3) Primarily MOA and maybe Sub-MOA, but mainly just MOA.
Okay, you have been the victim of too much information - which is understandable concering the shear volumes of it on the WWW concering this one lone "mysterious" rifle.
Look, 100 yards, for a .223/5.56 AR-15 variant is an "easy shot". This is NOT a stretch of the platforms abilities by any stretch of anyones imagination.
Hell, I think the Marines shoot out to 600 with open sights with their M-16s, and that's the same platform underneath.
You don't need a 20" bull barrel on a weapon like this that you want to shoot "out to 100 yards", unless you want to shoot dimes at 100 yards and do it all day. You definitely don't want a 20" barrel on a home defense gun.
Here are the three most important pieces that you need to consider on this platform:
Ready?? - This is where the magic happens.
1) Your Trigger. A good trigger job, or a good drop in trigger, will tighten up your groups like you wouldn't believe.
2) Your Barrel. You need the right twist rate for the ammo YOU plan on shooting. You don't need a $400 name brand barrel to shoot good groups. You do need a decent barrel with a twist rate to match the type of ammo you are going to buy. Period.
3) Free Floating the Front Handguard. Those ones you listed are bottom of the barrel crap. You want a Free Floated front barrel. Without it, any pressure from your sling, or even resting it on sandbags at a funny angle, adds stress to the barrel directly. This affects accuracy. Free Floating the front hand guard allows the barrel to remain "outside influence" free. Thus, your barrel should be in the same spot each and every time you pull the trigger....
That's it. Get a weapon that fits that criteria, shoot the correct weight ammo, and MOA should be possible if you do your part. Get into it a little bit, spend some time behind the stick, tune up a load that your weapon likes, find a good day to go to the range and you might even pull off sub MOA without having to spend any vast sum on expensive brand name parts..