They are really well made and have a great reputation for reliability.
They are not sub-MOA accurate out of the box. The guns range from 1.5 to 2.0 MOA, and require match ammo for best accuracy. They also benefit from trigger upgrades. Combat accurate with XM855 ammo, about 2.5 MOA.
There are more accurate guns, but it is a highly ranked AR-15 for build quality and operational reliability.
I looked at them closely, and bought a Colt LE6940 instead. But the MRP carbine was tempting.
If you buy one, the 18" is reportedly more accurate. So it depends on model and length.
The LMTs also do some mods to the bolt carrier which are designed as improvements over the mil-spec bolt carrier design. Two additional gas exhaust ports (five instead of three) and they chamfer (relief cut) the bolt lugs, and do some additional work to improve cyclic rate, supposedly. And you can get a mid-length gas system, something Colt has yet to offer.
I went with the Colt once I could compare them side by side. The lifetime warranty was a factor. And they are sub-MOA capable, and not as fussy about ammo selection.
That is a very good price for a complete rifle...just the uppers sell for that much.