Vortex/Strikefire Scopes?

[RogerFoxDog]

I would like to know if anyone has had any experience with these red/green dot scopes for the AR flattops. TIA

Vortex - Vortex StrikeFire Red Dot Scope for AR15 (http://www.vortexoptics.com/product/vortex-strikefire-red-dot-scope-for-ar15)