They are individually packaged.
Yes, the Sig Sauer Sierra3BDX 2.5-8x32mm Rifle Scope is designed for use on AR platform rifles.
Everything you need, comes included.
You would need a picatinny scope mount.
The SIG SAUER Sierra3BDX 2.5-8x32mm Rifle Scope has 2.5MOA adjustments and the Romeo1Pro red dot has a 3MOA dot.
The Romeo1 Pro comes with the protective shroud.
The SIG SAUER Sierra3BDX 2.5-8x32mm Rifle Scope is 10.75" in overall length.
The Romeo1PRO 1x30 Reflex Sight can be switched to the left side of the mount and scope.
As long as you have a picatinny rail base on your rifle, then the SIG SAUER Sierra3BDX 2.5-8x32mm Rifle Scope will fit using the included picatinny scope mount.
The standard SIG SAUER Sierra3BDX 2.5-8x32mm Rifle Scope 30mm Tube and Romeo1PRO 1x30 Reflex Sight Combo comes with the SIG SAUER Sierra3BDX 2.5-8x32mm Rifle Scope, Romeo1PRO 1x30 Reflex Sight, Alpha2 Scope Mount. It also comes with the battery for both sights and instructions. Nothing else is needed for install other than a rifle with a picatinny rail.