Bought it NIB last May after coon fingering a buds @ one of our steel matches <$500 in it after adding the MRDS & already had a spare SOPMOD so I added it before rattle canning everything.
1K+ rds. of CCI MM thru it w/ zero issues as I set it up it VERY sim to how my SBR & carbine are configured so I can work on *sights ‘n trigger* so to speak. Friends that shoot it, often times are hooked quickly & buy one for themselves.
Curious why folks chose to add a different CH, issues w/ the OEM cheap plastic one perhaps?