TM-9-2350-311-10 M109 Operator's Manual for M109A2, M109A3, M109A4 and M109A5 Download
Page 520 of 775
TM 9-2350-311-10 4-3 M27 COMMANDER’S PERISCOPE a. Removal 1 Pull and turn two support hooks (1). 2 Remove M27 commander’s periscope (2). b. Installation 1 Install M27 commander’s periscope (2). 2 Secure M27 commander’s periscope (2) with two support hooks (1). 4-2 Change 2