Included First Strike T15 parts: 3x Oring 018-P70 1x T15 Valve Spring – AR11E501 2x Valve Pin Assy – AR11E101-C 4x Rubber Detent – R-200 1x T15 Valve Seat w/O-RING AR11E105-C 2x Lower Manifold Screw – AR11E801 2x T15 Upper Manifold Seal – AR11F602 2x T15 Selector Index Pin – AR11A104 4x T15 Lower Receiver Cross Pin A – AR11A906-C 1x T15 Sear Pin – H-D 1/8 .688 1x T15 Sear- SEMI – AR11C202 1x T15 Pawl Pin – F10-0016-52 1x T15 Pawl Spring – AR11C503 1x T15 Trigger Pawl – AR11C201 1x T15 Rear Cap Assy – AR12D001-C 1x T15 Lower Airplug – AR11A112 2x Oring 012-P70 2x Oring 1.5X17-B70 1x Oring 015-P70 1x T15 Striker Spring – AR12D501