[Guest]

Alright well I'm finally going to be able to complete one of my RRA AR15s. Currently I have a RRA lower that I assembled with a RRA 2-stage trigger/parts kit and a 5 position Vltor stock awaiting an upper. I want to stick with all RRA and go with one of their 16 inch uppers.

Here lies my question. I'm stuck between either the 16 inch upper with the mid-length hand guards or the CAR length handguards.

CAR Length
http://www.rockriverarms.com/item-d...mage=uhcar.gif&CFID=16726750&CFTOKEN=30802997

Mid Length
http://www.rockriverarms.com/item-d...mage=uhmid.gif&CFID=16726750&CFTOKEN=30802997

Would I be able to free float the barrel with either choice? Looks wise I like the mid-length better but so far I haven't found any mid-length handguards that allow a free floating barrel.

Now on optics. I've decided to go with an Eotech and found that RRA makes a sweet mount for it. The Dominator Eotech mount.

http://www.rockriverarms.com/item-d...mage=rrdom.gif&CFID=16726750&CFTOKEN=30802997

From my understanding this would allow co-witnessing sights so if something went wrong with the Eotech I can sight in with the iron sights??

Sorry for the long post and thanks in advance for the help! I've looked on AR15 and it information overload so hopefully I can find the answers here.

Now if I just have the cash to finish my RRA 24" Varmint AR.....

 

[Guest]

I'm nto sure how helpful my reply will be, but I"m waiting on my Stag upper to come. I wanted some kind of basic optics...nothing super long range as I went with a 16" barrel.

but Randall at ar15barrels.com who's customizing my upper (I lack tools, and the balls to do it right now)...and he suggested no A2 front sight, as it will be in the way of the scopes field of vision.

So I instead opted to ditch that, and in its place I've got a railed gas block.

I don't know if the Eotech would be blocked by a front sight though.

 

[Guest]

RRA claims it puts the dot just above the front sight post. I'm also considering just going with a detachable carry handle for now to save money. However if I can I'd rather just skip the 100 dollar plus carry handle and put that towards the setup I really want.

 

[Guest]

Eotech will/can co witness with your irons.....

 

[Guest]

That mount does a 'lower 1/3 cowitness' and not an 'absolute cowitness'. 1/3 and absolute are personal preference.

Yes you can free float a midlength -- spend some time at ar15.com and you'll find gobs of tubes and handguards for midlengths.

I personally can't see any reason to get a carbine length gun. I believe that the midlength holds every mechanical advantage over the carbine, as well as being more asthetically pleasing. My AR that I'm working on will be a middy, and I personally don't ever see myself owning a carbine.

 

[Guest]

So, a midlength is basically a carbine with the front post moved forward, longer forend grips and longer tubes, correct :?: I like the mids also, just trying to figure out what type of upper to go with :?

 

[Guest]

That mount does a 'lower 1/3 cowitness' and not an 'absolute cowitness'. 1/3 and absolute are personal preference.

I'm still sort of a FNG on this subject. Can you elaborate on the difference between 1/3 and absolute. I'm pretty much set on a mid length and might just go with iron sights to start with. However I'd like to know the details on the Dominator set up because in the long run that is what my AR will end up with.