Subject:
The neck clamp assembly.

Products Affected:
Kirby Morgan SuperLite-17 A/B / MK 21 Neck Clamp Assemblies

Subject:
Material change to 305-057 EXO BR Regulator Inlet Valve

Products Affected:
EXO BR (Balanced Regulator) Full Face Masks

Subject:
Material change to SL-17 Yoke

Products Affected:
Yokes for all SuperLite 17 A/B and MK 21 Helmets.

Subject:
Change of communications assembly

Products Affected:
SuperLite 27 Helmet