Here's a shot of the different bayonets submitted for the XM9 Bayonet trials.
From left to right: (2) Phrobis XM9s, S-Tron XM9, Marto XM9, Eickhorn XM9, (2) different types of Royal Ordnance XM9s, (2) Imperial-Schrade XM9s, Ontario XM9 (not evaluated during trial), Phrobis wire-cutter scabbard (not evaluated during trial.