No one else has heard of them?
My "knowledge" of them is limited & specifically unhelpful for the rifle you provided a link to.
Tippmann was known to me mainly because the Tippmann 98 was the
de facto pneumatic rental at so many paintball parks for years. I owned one & I have a buddy who has four so we can shoot each other on holiday gatherings at his house. This was produced by the senior Tippmann's company. Later the two sons (Brad & Denny Jr?) started their own companies of
Tippmann Ordnance with historical weapons and
Tippman Arms for modern sporting rifles. All are based out of Fort Wayne, IN.
Rick is bleeding from his right ear. A nice shot by the ladies!