Among other stuff, vaguely L-R/counter-clockwise:

Benelli M4 with 5-round restricted magazine tube
M18 smoke grenade (almost certainly a TMC airsoft replica; same lot number)
replica of a Mark II fragmentation grenade
Defense Technology Multi-Port Plus stun grenade (also likely a replica; incorrect fuze for the actual Multi-Port Plus)
Rheinmetall MK13 MOD 0 stun grenade (as usual, same lot number as the one left behind in Somalia in 2013)
5- and 8-round en bloc clips for M1 Garand
Hakkotsu Thunder B airsoft CO2-based simulated grenade (makes a bang noise)

plus some (almost certainly also replica) Glocks, an undersized Eagle Industries-pattern 30-round AR magazine pouch, and one of those ultra-generic Chinese flashlights with a Cree logo in lieu of one of their own.