@Jim Oaks
I have assembled both Wilson Combat (WC) and Anderson Manufacturing (AM) rifles and pistols. I don't know if you are the assembly type so a fully assembled A4 from AM is in your price range.
The A4 is a standard 16" barrel AR with A type gas block, while the M-LOK uses a low profile gas bolck abd a few other hop up parts. I have assembled three AM pistols and three AM rifles; they have each operated flawlessly.
Two features that put AM in a class above all others are:
1) they manufacture and sell the only bolt carrier assembly (bca) and upper that never requires lubrication, RF-85
2) their custom handguard is the most attractive model I seen or used
Also worth noting, they offer a significant military discount. Last I checked it was -25%, which permitted me to buy their components to assemble the same exact thing as their M-LOK model for $439.00 plus tax and shipping. The "bubba" who I assisted with the assembly opted for the several "upgrades" upon my recommendation:
1, ambidextrous safety
2, 10.5" barrel augmented with a custom Al extension, pin/welded with a built in vertical stabilizer/flash hider
3, Magpul grip
4, Yankee Hill Machine charging handle extension
5, Teflon coated stainless steel single stage trigger
Bubba's rifle with upgraded with shipping and tax, including FSL transfer was $700. I have a couple pics of it, it is the lightest, nicest looking AR I've ever felt (I like it better than my own)!!
Another point of interest with Anderson Manufacturing uppers/lower is that Mr Anderson somehow came to be in possession of the original Colt dies from the original Military issue Colts. In other words...your buying a rebranded Colt AR.
There are one or two other manufacturers that do pretty good for, well now the $700-$800 range (thanks economy).
If your are the assembler type and you want something a little more eye catching, at the range, then I recommend building a WC. It will cost you $850-$900 but you will have the equivalent of one if their $2,400 rifles, upon completion. This very nice upgraded WC firearm can be assembled for a bit less expense, without sacrificing quality...by upgrading from WC on a couple key components, which do not have the Wilson Combat brand etched on them.
Check out their website:
"andersonmanufacturing.com"