Caution

Do not apply pressure to the receiver.

(d) Grasp the BARREL near the receiver so that when force is applied the barrel will flex in the same direction as noted in step (b).

(e) Give the barrel a sharp jerk of approximately 20 to 40 pounds of force.

3-13. UPPER RECEIVER AND BARREL ASSEMBLY (CONT).

(f) Remove the barrel from the vise and recheck straightness (step (a)).

(g) If gage still will not pass through the barrel, perform step (b) to determine direction of bend. If the barrel is still bent in the same direction as before, perform steps (c) through (f) using slightly more force. If the barrel is now bent in the opposite direction, replace the barrel.

(h) If the gage passes freely through the barrel, the barrel shall be considered straight and continue in service.

(i) If the barrel has been straightened, the rifle must be targeted (p 3-39).

d. REASSEMBLY

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