For those who need good reproduction gear, here are links to What Price Glory items.
Reproduction Checklist (you need to march in NYC Parade)
Pre WWI first aid packet for the M1910 First Aid Pouch
M1910 Haversack and Pack Carrier (1917 production)
M1910 Bayonet Scabbard (for the M1905 Bayonet)
M1910 cartridge belt with eagle snaps
British SBR respirator gas mask and bag
Wool puttees (leg wraps)
M1912 Wool Enlisted Tunic/Service Coat
Other recommendations
Helmet and replacement chinstraps – Prairie Flower Leather Co.
Replica collar disks & insignia – Repros By Ray