Just looking at the Spec:
Spike - DD CHF barrel - spec looks good - but the stock is of Asian origin, by the look of the picture.
LMT -LMT 2 stage trigger and SOPMOD stock are expensive add-ons: good deal at 1500 bucks. The lack of parkerization under FSB is the only down side. LMT is ISO 9001 certified
RRA - 4140 steel barrel - This has more consumer grade "features", but "lighter" on militry type testing and specific materials.
S&W - the rifle itself is good - like RRA, it gets a more consumer grade barrel. S&W is ISO 9001 cerrtified.
STAG - it is an orange compared to the others ( apples). It is a totally different rifle for a different purpose.
Thanks for the no BS description and appreciate the distinction between the STAG & the rest as well. Many have asked for the purpose, and to me it's a chicken or egg question.
Being a newbie to ARs with only a limited experience with guns(WWII rebored target bolt action with heavy barrel and competition sights, plethora of 22s made in someone's shop class, few handguns, and limited training on competition target shooting), I can't really say what the use would be without asking more questions. It's like I don't know what to ask, so I keep on asking until I know more... Thanks to everyone for your patience. I also believe(
For example, I'm interested in the ARs for ergonomics, accuracy, compact size, and, of course, the cool looks(I am 18 again...). But I also love the competitive aspect & the science of shooting, particularly long range. Can one AR do both? If so which one? Is there one that is a good short barrel AR that I could convert later with a heavy 'floating' longer barrel to do the long range work?
Everytime I get a knowledgeable reply, I am furiously researching to find out what the experts are talking about. ie. I just learned what the difference between the gas block and gas piston is. INCORRIGIBLE's lesson on this topic was huge to me. Which leads to more questions such as does it make a lot of difference to a basic AR?
Then there is the billion manufacturers who, of course, all purport to being the best. The best way for me to find out the difference between the BMW, Hyundai, Honda, and Chevy is to propose several models and troll for expert opinions to build a body of knowledge. I've found that ESQ & others who have said "I grabbed one of those 10.5s. Can't beat that deal with the sopmod and 2 stage." or FPEMBLETON's "Those LMTs are a very good deal. I'd pick one up if I didn't already have one.", or CHRISF's "I have an LMT Defender 200 with 16inch barrel. Love it. All the others quality doesn't come close to LMT." as a body of evidence testament that LMT Defender 2000 deal is a good one.
Being a tinkerer, I am intrigued by the thought of building one myself and the challenge is intoxicating, but don't want to end up with a frankenAR, particularly one that does not work. To do this, I would do far more research, but posts by BRORDO & Calves42 are encouraging as well as links others have suggested.
I agree with INCORRIGIBLE. I tell all my students in my other life that there are no stupid questions. Just stupid people who fail to ask questions when they should...
So, I have even more questions as related the AR choices:
1. Acronyms: What is CQB? Why do I want to drink a bottle of this everyday? What is CAR?
2. What is the difference between Service Rifle competition, 3 gun challenge?
3. Is it better to start with a cheap Norinco-type setup? Or get a mid-range plinkers from RRA? Or just go for the LMT/Stag?
4. Do the small pistol-type (RRA A4 pistol or LAR 15 or other cool-looking pistols) essentially be modified to become a full size ARs over time without compatibility problems? Is this even wise?