Sure
DS Arms is a reputable middle of the road brand, but PSA has a
CHF extra thick chrome lined upper for $319, just need to add a BCG and charging handle, which is about another $130 or so and you can always change the trigger out later if you don't like it, the stock trigger is maybe $20 of the cost so it's not like you'd be out much money, though most people stick with stock for plinking...
There hasn't been a bad suggestion from anyone here yet so just pick and choose what you want that fits into your budget.
And whatever you finally decide on the hardware you're going to need mags, I doubt anyone will deny that PMags are as good as it gets...
$8.49 each plus shipping