This listing is for:

One (1) complete O-Ring seal kit, for Crosman models
MK-I & MK-II, in  .177 cal. & .22 cal., version #1.    

Enough seals to rebuild one (1) MK in either caliber .

Five (5) seals are included in this kit:

A)  One (1) piercing body, o-ring seal.
B)  One (1) piercing pin, o-ring seal.
C)  One (1) .22 cal. breach bolt, o-ring seal.  
D)  One (1) .177 cal. breach bolt, o-ring seal.
E)  One (1) valve body, o-ring seal.

Included in this sale is a printed copy of an exploded
view showing seal locations, their part numbers, and
the E-Z seal ID guide. This is exploded view #1, showing
the early version with lever action piercing cap.