I called Primary Arms to ask that same question. Since they made the ACSS reticle I thought it made the most sense to call them. They told me I needed to buy the strelok app and chronograph my specific gun/ammo to figure out what yardage to zero in-order for the ACSS to work properly. I wish they would publish the data for us so we don't have to buy a chronograph and ballistic calculators but it is what it is.
The Holosun HE503CU Elite Paralow 2MOA Green Dot Sight at the link below is solar powered.
https://www.opticsplanet.com/holosun-he503cu-gr-elite.html
It is ultimately the customer's responsibility to investigate and ensure that any item is legal to use, carry, possess, purchase and/or own within the customer's intended federal, state and/or local area.
Yes, you can find it here : https://www.opticsplanet.com/holosun-he503cu-gr-elite.html
Other users have stated that the Holosun Paralow Red Dot Sight works great with it at 1/3 cowitness, and they have successfully utilized this sight with astigmatism.
The Holosun Paralow HS503G ACSS CQB Reticle Red Dot does have the Shake Awake Feature.
The Holosun Paralow HS503G ACSS CQB Reticle Red Dot Sight uses the same footprint as the Aimpoint Micro T-1. So the Holosun Paralow HS503G ACSS CQB Reticle Red Dot Sight could use a T1 mount.
I recommend using the Holosun HM3X 3x Red Dot Magnifier with the Holosun Paralow HS503G ACSS CQB Reticle Red Dot Sight. The Holosun HM3X 3x Red Dot Magnifier low mount allows for absolute co-witness height but also comes with a riser. It will work well with the Holosun Paralow HS503G ACSS CQB Reticle Red Dot Sight using the low mount. The magnifier can be found at the link below.
https://www.opticsplanet.com/holosun-hm3xt-3x-red-dot-magnifier.html
The Holosun Paralow HS503G ACSS CQB Reticle Red Dot Sight has the Shake Awake feature. So the optic shuts off during periods of motionlessness. The amount of time for it to shut off when not in use can be programmed.
Holosun has a set of flip up caps that might fit the Holosun Paralow HS503G ACSS CQB Reticle Red Dot Sight. However, we currently do not have those caps.