Specification: Proof Load: Identification: Common Use: Comment: MS22017 2,500 lb As marked Military harnesses Use with large frame “V” rings. Specification: Proof Load: Identification: Common Use: Comment: MS22018 2,500 lb As marked Navy NB-6 and NB-8 assemblies Do not use with shallow frame “V”  ring. Figure 3-49.  Ejector snap, non-adjustable. Figure 3-51.  Snap, quick fit ejector. Specification: Proof Load: Identification: Common Use: Comment: MS70121 5,000 lb As marked Army troop reserves Must be mated with the larger “D”  rings for both compatibility and  strength. Specification: Proof Load: Identification: Common Use: Comment: MS22043 2,500 lb As marked Aviator emergency parachute  system Snap portion is the same as the  B-12 snap Figure 3-52.  Snap, parachute chest-type pack. Figure 3-50.  Snap, quick fit. 3-15