Mk19 Receiver Buffer Bodies

If no further measurement is necessary, install the sear assembly onto the receiver. If the dimension is less than 0.283, go to step (f). If it is more than 0.313, go to step h.

f. If the dimension for either receiver buffer body in step (g) was LESS than 0.283:

(1) Remove the receiver buffer body from the sear housing.

(2) Remove the inner components from the receiver buffer body.

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(3) Take one washer from the extra (nominal) washers in Group A (4) (3 sets of 6) and place it parallel (curved in the same direction) with the nominal washers in Group B (5) (4 sets of 4).

(4) Assemble the components in the receiver buffer body as directed in assembly steps 2a through 2e. Now, however, there will be one less washer in Group A (4) and one more washer in Group B (5).

(5) If the washers in the top of the cavity (Group A) (4) do not fill the cavity, add washers in parallel to the top washer until the cavity is filled. Then install the buffer retainer.

(6) Install the receiver buffer body back into the sear housing.

(7) Repeat the procedure beginning with step 4b, until the dimension measures from 0.283 to 0.313 inch.

h. If the dimension in step 4e was MORE than 0.313:

(1) Remove the receiver buffer body from the sear housing.

(2) Remove the inner components from the receiver buffer body.

(3) Take one washer from the extra (nominal) washers in Group B (5) (4 sets of 4) and place it parallel (curved in the same direction) to the nominal washers in Group A (4) (3 sets of 6).

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(4) Assemble the components in the receiver buffer body as directed in Assembly steps 2a through 2e. Now, however, there will be one more washer in Group A (4) and one less washer in Group B (5).

(5) If the washers in the top of the cavity (Group A) (4) do not fill the cavity, add washers in parallel to the top washer until the cavity is filled. Then install the buffer retainer.

(6) Install the receiver buffer body back into the sear housing.

(7) Repeat the procedure beginning with step 4b until the dimension measures from 0.283 to 0.313 inch.

ASSEMBLY

1. ASSEMBLE THE BUFFER ROD ASSEMBLY COMPONENTS.

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Responses

  • ruby
    How many washers are there in a mk19 sear buffer?
    6 years ago

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