Sig MCX rattler SBR

[Johnny C]

Has anyone done the rattler upper on an ar15 SBR lower yet?
Yes, I could just buy an SBR Rattler complete, but that is not the question here....is it?

 

[KJQ6945]

Never post in a thread where the OP is already arguing with himself.

 

[anthony010]

I haven't but I have been toying with the idea also.

 

[Beowulf]

So, is the Rattler anything more than a $1800 5" barrel .300 BLK upper? Also, I thought 8" was the recommended shortest length for .300 BLK, to get the rounds full potential.

 

[Johnny C]

It has a op rod recoil system instead of needing the tube sticking out the back of AR15s.
It would be cool to have an SBR AR with a folding stock.