Krytac War Sport LVOA-S Complete Upper Receiver Assembly (Color: Flat Dark Earth)

"Let me start this by saying that this DOES come with an outer barrel, even tho it doesnt say it does! DONT buy a separate outer!

That aside, this is a very easy to drop in kit. It comes with the rail, War Sport marked upper receiver, outer barrel, inner barrel, and barrel nut. Thats it. No tools, and no, it doesnt have that tacticool paracord to wrap on. I put this on my Krytac CRB MKII-M, and it fits perfect. I wanted to use my Trident upper with this instead of the War Sport upper, but the outer barrel that comes with this does NOT fit the Trident receivers. I was able to just use this to replace the upper receiver. it perfectly fit an XT301 tracer, just note you might wanna use a small allen key or something to turn the tracer on. Also a small note, the screws for the picatinny rails Krytac sells dont fit very well, unlike the PTS CMR rail cover kit. Overall, super glad i can just swap uppers and have a whole new looking gun! Its a bit pricey, but unless you wanna buy the whole LVOA, this is a good suggestion.

Pros:
Easy installation
Comes with everything to drop it in
It DOES have outer and inner barrel!

Cons:
Only one i can really think of is it doesnt come with the tools to install it, but its nothing any normal person wont have in a toolbox.