Technical data

TM 9-1005-319-23&P 0015
0015-15
1 v s 1 1 9
1 9
1 1
1 5
Figure 20. Torquing of Barrel Nut Assembly.
8. Engage threads of barrel nut assembly (19) with upper receiver assembly (11).
9. Using combination wrench (15) and torque wrench, torque barrel nut assembly (19) to 30 ft-lb (40.5
N-m). Torque is measured when both wrenches are used together.
NOTE
Performance of torquing procedure three times provides for a better thread fit and
prevents barrel nut from becoming loose. Do not use the torque wrench for loosening.
10. Make certain all three drive pins or the teeth on combination wrench are engaged with barrel nut
assembly (19). Loosen and repeat torque operation. Then loosen the barrel nut again.