Just tried out my latest purchase, made by ThirdEye (EVO Engineering & Design) in .308.
Extremely well made out of stainlesss and aluminium, weighs around 400 grammes, operates on the reflex system but 8 1/2 inches long which is about 3 1/2 inches shorter than my .243 Wildcat Predator and at 40mm lot narrower, really looks good and doesn't alter the balance too much.
Sound attenuation is OK, now I don't need ear protection for my .308. Cheaper than the Predator also.
It is now fully dis assembled in a bath of warm water and soap flakes for the next hour.
I have no connection with the manufacturer other than an impressed customer - they couldn't be nicer or more accommodating when I called to pick it up and waited while they prepared the back bush.