So I recieved my CZ upper the other day. It came in a plain unmarked white box, no paperwork, no warranty info, no nothing. What do you expect from a Czech company?
Anyway, I like the upper. It comes with a free float handguard that screws onto the flat-top upper reciever. There is a front site picatinny setup that was a little hoaky, so I removed this via the allen screw, and it cleaned up the barrel somewhat.
The magazine it came with was heavy. Nicely crafted and fit perfectly. The rounds fed into the mag quickly with no trouble. I tried my 22lr M261 drop in mag conversion in this upper, but no luck. The USGI mag wouldn't even fully mount into the mag well.
Shooting the weapon was very fun. I was using a variety of Aguila ammo:
40 grain match
40 grain subsonic
30 grain hyper velocity
Both 40 grain bullets yieled good minute of squirrel accuracy (1-2" at 30yards). The 30 grain hyper velocity was all over the place with groups as large as 5". I have no idea what twist barrel this comes in, but with the heavier bullets fairing better than the lighter ones, I am anxious to try the 60 grain Aguila SSS.
Optics used was an Eotech 551. Testing was conducted without benchrest, just me parked in a field sitting in the seat of my '77 Bronco.
MG