Check out the deal on Replacement SPH-4B, SPH-5, HGU-56 Flight Helmet Chin Strap with Fidlock Quick Release Buckle at
Replacement SPH-4B, SPH-5, HGU-56 Flight Helmet Chin Strap with Fidlock Quick Release Buckle, designed to snap onto the helmet's D ring on one end of the strap and lace through the helmet's double D-rings on the other end of the strap, new condition.
ZetaLiner® Helmet Liner for HGU and SPH Helmets by Oregon Aero
About SPH-4B - FLYING HELMETS AND ACCESSORIES - U.S. Militaria Forum
GENTEX Helicopter Helmet HGU-56 RWH
Custom Replacement Flight Helmet Chin Strap with
Boom mic.
Gentex SPH-4 Helicopter Flight Helmet Size Regular - Complete - New in Box
Friebe Luftfahrt-Bedarf Gps, Headsets, Funk, Ausrüstung für Piloten - Gentex HGU-56
Tactical Gsgm Ground Spec Goggle Mount W/ Hgu-56/p Sph-4 Flight Helmet Adapter For An/avs-6 Avs-9 Anvis Gpnvg-18 Night Vision Bk - Hunting Accessories - AliExpress
NEW GENTEX HGU56 FLIGHT HELMET TPL XL LINER HGU-56/P SPH HGU
Custom Replacement Flight Helmet Chin Strap with
U.S. Army Helicopter Pilot Flight Helmet Gentex HGU SPH No reserve!