AR Madness =)

[Nate]

So, just this weekend my father gave me our AR-15 to take down to Virginia. Oddly enough, as a side note, I purchased some ammo at the Walmart up there and was forced to go through the driver's license and jacked-up price rigamaroll.

ANYHOW, this is mainly geared to all those "build it yourself"ers.

I have a bone stock Bushmaster AR-15. It's not an M4, isn't a varmint gun, it's one of the earlier ones that's an exact copy of the M16A2, less the burst function. It has the rifle-length barrel and full stock.

But for when I'm feeling frisky, I'd like it to be. So, I'm looking at swapping out the upper for something with a flat-top railed receiver, along with some quad rails for mounting of optics and perhaps a flashlight.

My question is thus: Does anyone know if a complete upper from Rock River (http://www.rockriverarms.com/subcats.cfm?Category=06) would simply swap out with my Bushy upper receiver? I believe it would (I assume everything is made to mil-spec). Firsthand experience would be great.

I plan on putting in about $1,000 or so for this project in the next few months (for the new flat-top and quad-rail upper, as well as an EOTech 552).

If anything else, I'll plan to call RRA (couldn't find an e-mail address on their site!).

Thanks guys!

[DefensiveCarry.com]

[Redneck Repairs]

rra upper to bushy lower should work fine as far as i can see .. be really carefull with the term " mil spec " since in the last 20 yrs or so it seems to have varible meanings in the ar world . heck even in procurement mil spec means nothing today ... its all about common parts avalable . anyway congrats on the new ar , i am going thro the same thing on what will i config my new one too lol .

[Packman73]

Sounds like you need to talk to Pete at AR15sales.com. He'll hook you up at a fair price.

[CLASS3NH]

the Rock River upper (or just about any other MFG) will fit just fine.......

[JT]

My question is thus: Does anyone know if a complete upper from Rock River (http://www.rockriverarms.com/subcats.cfm?Category=06) would simply swap out with my Bushy upper receiver? I believe it would (I assume everything is made to mil-spec). Firsthand experience would be great.

Yes, it definitely will work.

[rocky]

It should fit fine. occasionally you find a few that either are a bit otta spec, that refuse to go together easily.

[Nate]

Thanks for the tips, guys! Packerfan, I'll be sure to check into that website - thanks!

[cpmiv]

It'll work. I got this from RRA:
http://www.rockriverarms.com/item-de...TOKEN=54575969

And a stripped Bushy lower. Put it all together and it works great

[SIXTO]

I am most impressed with RRA. I have these in my personal stash
http://www.rockriverarms.com/item-de...TOKEN=95660724

http://www.rockriverarms.com/item-de...TOKEN=95660724

And I am currently building 4 of these, except they are built on a M16 and will retain the auto feature.
http://www.rockriverarms.com/item-de...TOKEN=95660724

But to answer your question again, yup, it will work just fine. Dont be in a hurry though, RRA is at least 6 weeks behind.