ARmalite introduced their AR-10 "A" model several years ago that accepts the DPMS/Magpul mags. Years ago when there were new mfgs coming onto the market place and companies were at a stage where they were making improvements they had to make their designs somewhat propitiatory to maintain revenue. Now that the market has changed more of them have come to streamline their products to accept crossover mags.
I have a ARmalite "B" model which has the lower and mag design all to itself. And yes there was a time when mag pricing was a big deal but ARmalite stepped up production to then be able to lower the cost to the customer. The best part is that they have AR-10 mags in 5,10,15,20 and 25 round capacities and have sales all the time. The most common is the 5 for $150 which is a good deal compared to where were 5 years ago.
When I bought my AR-10 I was trading up from the AR15 I had so I could take it hunting. My main concern was quality and price was second and then customer support. DPMS makes a decent rifle as I have shot quite a few of them but it wasn't built to the standard and QC of the ARmalite product. The tolerances of the ARmalite are so good that the rifles needs a ton of lube during the first 100 rounds or so to get it worn in to function 100%. Mine when through these exact steps that ARmalite and their customers said it would and now it is butter smooth and flawless. At the time I was following along with ARmalites forum sponsor page at AR15.com where you have direct contact with ARmalite.When I started to make changes to the rifle I called into the techs at ARmalite many times and received phenomenal CS. Twice I made mistakes and their tech sent me a part each time free of charge to get me running again. I have never had any other firearm mfg do that for me.
I prefer the ARmalite AR-10 for its ruggedness, precision and fit and finish. All the way down to the mags their QC is top notch and they delivered a perfect rifle. I have used the rifle for target shooting as well as hunting deer and the gun has operated flawlessly. So much so I am working on purchasing another AR-10 in a A4B Carbine where I can use the mags I have.
In terms of price I paid $1350 for mine in 2006 and I see Bud's carries the same rifle for $1250 today so no price increases at all. If your concerned about mags look at the "A" model AR-10 as it has the lower that will accept other mags.
AR-10A
