Having owned most all NR Black Rifles with the exception of the Swiss Arms series, Famae series, and the the Jard, PS90,
This means I have experience with the following, and I will give a brief 1 to 5 star rating from my experience with it.
-IWI Tavor
-Bushmaster ACR
-Robinson Arms XCR-L 5.56 keymod
-Norinco T97NSR
-FNH FS2000
-Kriss Vector .45ACP
-ATRS Modern Hunter
-Keltec RFB
-Norinco M305
(I think thats all?)
The 3 in the line up that I have owned that every NR blackrifle owner should pursue in my opinion in any given order is the IWI Tavor Tar-21, Bushmaster ACR, and ATRS Modern Hunter. All three are phenominal for different tasks and reasons. I will try to prepare a breif over view and comparison of the ones I have had the pleasure to own.