So, answers/recommendations will vary depending on what you want to do. I can give you some general info, but more about the intended purpose would help.
GregVa wrote:So I am looking to build a AR15 and deciding if I should start with a stripped lower, or complete. I am tempted to start with a stripped to split up the cost a bit, any ideas.
I often do this with items I can't or don't want to buy all in one chunk. Mostly because I am an impulse buyer, so saving money till I have it all just doesn't happen. I have to spend it when I get it. With that in mind, I can think of many reasons to do what you ask.
GregVa wrote:A couple questions:
I may or may not already have access to a friends cmmg ar in 5.56, so I am considering just making another in 5.56.. or would you rec another cal and why.
If I wanted to make it a .22, should I just go with 556/223 and then use a conversion kit to shoot 22?
Again, depends on what you are doing. Popular rounds in an AR style weapon are .223, 5.56 NATO, 7.62 NATO, 7.62x35 (300 Blackout) and more recently 7.62x39 (AK style).
.223 and 556 are cheap and plentiful, can range out to 650m and still be useful on a soft target, and are a great all-around rifle cartridge. You can buy 22LR uppers or bolt kits, which are much cheaper to shoot, when you can find the ammo. You can also use a 300 Blackout upper on it.
7.62x35 (aka 300 Blackout) is a great compromise between all combat/defense uses and target shooting. They have sub-sonic rounds that are great for suppressed, low noise, very low recoil, CQB type applications out to 150m.... basically performs a shade better than a 9x19 pistol round. Then, with literally nothing but a mag swap or reload, you can use high pressure, supersonic rounds and have more energy than the .223/5.56 or the 7.62x39, reliably out to 350m-400m, and still lethal out to 600m+ on soft targets (bearing proper barrel and round combination). You can slap a 22LR, .223 or 5.56 upper on it too.
An AR in 7.62 NATO (aka .308 WIN) has the same basic look and feel as an AR-15 / M4 clone when built into an AR platform, but makes much more energy, hits fatally at 1100m-1200m, but tends to be a few pounds heavier due to thicker materials needed for the increased pressures.
AR's that shoot 7.62x39 (AK style) rounds are great if you want to be "that guy" at the range who has the crossbreed that many seem intriguing and purest hate. LOL They perform a touch better than the .223/5.56, but not as much energy as the 300 Blackout not the energy and range of the 7.62 NATO.
Personally, I wouldn't spend the money on a dedicated AR that fires 22LR unless its going to be purpose built. The cost is really high compared to many other semi-auto 22LR rifle styles.
GregVa wrote:
Should I use a slide fire stock?
I bought one 2 years ago and have not used it yet. Many of the ranges around me won't let me do auto-fire, and they consider the slide fire stock the same thing. My plan is, if I make it to Range 82 anytime soon (like, when I manage to get a weekend off), I will take it with me just to screw around and see how it works.
I think it looks and feels really cheap. I would only install it when I'm at the range and plan on playing. Even if I love it, due to what feels like low durability and poor aesthetics, combined with the point that you can count on accuracy problems in a defense situation, there is no way I would leave it on all the time.
Upside... I hear its really fun and it can be swapped on and off pretty quickly.
Downside... mag dumps with anything listed above (excluding 22LR) is going to cost between $8 and $25 for a 3 or 4 second bust of fun.
GregVa wrote:What brand parts.. I want to stay mil spec, and have the whole AR under 1k(ideally way under) but whats the trade off?
Stick with recognizable and popular names and you will do just fine. Under $1k should not be a problem. I really sweet lower, completely done... maybe $350 for "quality" Mil-Spec products. If you want a really nice trigger instead of the mil-spec trigger, add at least $250 to $300 to that. A decent complete A4 upper will be around $500.
So figure $850 to $1,100 for reliable quality. I've seen some guys put together AR's in 5.56 for $650, and two years later they don't own them anymore or it never leave the safe. I'm guessing that's for a reason.
GregVa wrote:I know this may lead to many opinions, but please let me know, as I want to make a smart buy
thanks
Shoot some of your friends stuff or find rentals too. That may help. I have found some very generous forum members that spent time at the range with me. Maybe someone close can let you take a few options for a test-ride.
I hope that helps man. So many variables and personal preferences that its very hard to make honest recommendations.