So this is just for anyone wanting to know.
I stopped by my local Dick's Sporting Goods in Christiansburg to look around, and found that they are now selling AR15s as well as... AR parts! they had some Troy stuff such as a drop in carbine rail and a few end plates for sling mounts. They had some Bushmaster spring repair kits and a small parts bag of typically lost parts. There are some other things there as well. Thought it was kinda cool seeing that. I may pick up the spring repair and small assorted parts bag, just to have. Not sure on prices and how they compare, but it may be worth a look at your local Dick's!
Found this on their site, it's the one they had in store.
Troy 7" rail
Be careful of the prices. Someone had a picture up here a week or 2 ago of them selling a front sight adjustment tool for $45.
Good to know. The short pump dicks has several. 223 ARs and a few. 22 ARs as well. I will have to look next time for the parts.