I just recently purchased a Bushmaster AR-15 with an A2 carry handle.  I was thinking about putting an eotech sight on it but I wasn't sure what accessory attachement I would need.  Any help would be greatly appreciated.

USGI mags and ammo!

basic accessories: good sling, Tac light, optic (in that order)--EoTechs are great!

Quoted: I just recently purchased a Bushmaster AR-15 with an A2 carry handle.  I was thinking about putting an eotech sight on it but I wasn't sure what accessory attachement I would need.  Any help would be greatly appreciated.

You'll need either a BC 'Gooseneck' Mount or a PRI 'Gooseneck' mount.  I know Bushmaster carries the BC.  These are the only two that I know of that will allow you to mount the EOTech AND allow you to cowitness your iron sights through it.

The ARMS #39 and other goosneck mounts won't do this.

Your other option is to buy a Troy FF handguard (they are easy to install you don't have to remove your barrel or Front Sight Base) install it then mount the EOTech to it.  This is the more expensive & heavy option - but it also allows you to use a VFG & light if you so desire.

thanks for the input guys.  I'm going to try and be more active on this board but it's kind of hard with work and school.