The predator titled rifles aren't any big deal, and in my view a negative. most any decent brand of AR is going to shoot 1 MOA, with quality ammo. Basically this means be able to hit a 1" dot at 100 yards, 2" at 200 etc.
The predator barrels are not chrome lined so in the eyes of most AR enthusiasts are inferior. they do not chrome line them because in theory chrome lining is one more step to have a slight error and affect accuracy. however, you are talking mass produced barrel in all three of those brands and the luck of the draw is a bigger deal then chrome lining variance. When I say luck of the draw, I am talking about the barrels that were cut after the bit was sharpened or right before it was sharpened, and etc. it is mass production not individual.
I don't know if any of those are Bull barrels, but don't buy a bull. It completely ruins the balance of the gun and has no advantage, except when you are trying to take the cheapest possible blanks and make them shoot fairly well.... not great, just fairly well.
A good blank that is cut well and chrome lined will shoot very well. But I prefer stainless match grade barrels for such work. I have 2 that are chrome lined, and one stainless in 20" that shoots like a dream and one in 16" that I am just finishing up. Also my 308 AR (DPMS LR308). The original barrel on that one was a turd, but the match barrel will shoot dimes at 100 yards.
Rather then the high rise receiver get a regular flat top and the Rock river scope mount. If you ever find a rifle you like better those hi risers are a tough sell on the used market.
Also, get a 2 stage trigger, RRA makes a good one. I really do not like the sales staff and management Armalite, but in all honest their 20" stainless is what I have and it is superb, I like their 2-stage trigger. I just hate having to deal with them (errors, excuses, attitude) Service dept has a great reputation though.
If you buy the upper and lower separately you save 13% (I think it is) on firearm excise tax, so consider buying them separately, you can mix brands with no problems.
I have owned 9 AR's and am wrapping up #10, and have half the parts for #11. Building your own allows you to use all of your favorite parts and allows you to buy sale items for the lowest final cost. But I do not recommend this until you have handled an AR and thoroughly understand it through maintenance. Anyone can follow the directions and do it, but many newbies have problems.
So in closing look at a regular stainless 20" from Armalite and Rock River, and also check out some of the custom shops like adco firearms, Bravo Company USA, Rainier Arms. Google those names. those guys can be rude, but it is because so many tire kickers call them constantly, their patience is all gone.
Send me a PM or e-mail if you wish.
