We finally had a PCC day at the local IDPA club. Got to shoot my carbine, and... didn't notice the cycling differences so much. Felt a lot like shooting a suppressed 5.56 outside (it's an indoor range) so none of the horrible blast, but I didn't notice any weirdness in the action, etc. So, works great under "stress" as a carbine simulator.
The big dumb RDS on the gooseneck (I have a fixed carry handle and FSB) worked as intended. Saw nothing but the dot, and the target. Worked great.
I did fuck up two things during the COF that prove my point I need to make this part of my routine shooting; there's not as much opportunity for using my real carbine at close ranges, with barricades, etc. So, I reloaded before leaving cover, then went to fire and got nothing. Bolt had locked back, but I didn't notice and fell into handgun/cqb speed reloading, so didn't rotate the gun, etc. and check like I otherwise would. Fail!
Also, ranges got deceptive, so I didn't hold over enough. Decent enough shots, but all a bit low because whoops. Also, fail: need to do it more.
Academically knowing and getting the reps are two different things. These are perishable skills and I don't do it enough!