Shot one a couple months ago. Very neat rifle. Great Concept.
The Concept: Take the best, currently proven technology in all areas, ie Barrel, Fire Control Group, and newest polymer and mold them into a rifle that everyone has been asking for. Not bad for a company that has 15 employees
Lower vs Upper serialized. The upper on this design is where the money is. You wouldn't want to swap uppers because it would be too costly. The lower takes an AR15 trigger, encased in a metal housing so any standard AR trigger will work. From what I could tell, it just uses some sleeves to keep them in the housing. So, if you want a lower that has an AK system of retention, pop two pins to seperate the lower from the upper, slide the buttstock up and out, remove a couple pins for the FCG and your done. The lower is molded Polymer and I would be surprised if it cost $100 for different lowers.
The barrels are standard AR barrels. The barrel nut is obviously different and uses an interupted thread and locking tab. The gas system replaces the FSB on the barrel and your done. So, again, all those proven, accurate barrels out there can easily be modded to work on this system. Want a 24" Krieger for long range work, no problem. All those guys developing 6.8 barrels, no problem. Pretty good idea, don't reinvent the wheel, just adapt to it.
The front hand guard comes in multiple lengths and is easily removed and replaced. Rails are easily added as well, where you want them, so you don't have to have a lot of extra weight.
I don't know too much about the gas system to comment on. The bolt carrier is very similar to the AR180, again a proven system and some might even mistake it for an AR15 bolt at first glance.
Buttstock is very sturdy and doesn't move when locked in place. LOP and the adjustable cheekpiece is nice and sturdy as well. You can also drop in a precision stock if you want. The prototype I saw looked pretty nice. It can be fired and charged when folded. The charging handle is ambidextrious as well. Want it on the left, push it through. Want it on the right, push it back. Pretty simple.
My shooting was fairly limited and just involved close in work, but I was impressed with the system. No Lube and about 6 mags worth of M855 and no failures after that particular gun had gone about 2500 rounds in demos and has seen lots of surpressed fire.
If MAGPUL can deliver it to guys at between 1200 and 1400 I think they will have a winner on their hands. If nothing else, it will make the market more competitve, which is a good thing.
Like anything, I bet there will be some problems that are encountered when it gets fielded, and its exposed to more environments, different ammo and some rough handling. It will be interesting to see how the FN SCAR comes out and at what price point.
I hope to get one of the first ones coming out, then I will run it through its paces. I have absolute confidence that MAGPUL will make it right if something is wrong. I don't know that this will be the one rifle you should own. I mean consider that you can get a decent AK for $500 right now and you can get a decent AR for about $850 and you've got two proven systems for about the cost of the Massada and don't have to switch anything. If you are a fan of rifles, I do think this will be one you have to own. I hope these get out quickly, who knows what the future will bring.
Tom