| 89 / | HD | ORDNANCE |
|
| 125 | DF | AUTOMATIC {14} |
| 160 | DF | .~ Movable barrel (e.g., rotary) {4} |
| 162 |  | .~.~ Rearwardly movable {10} |
| 163 | DF | .~.~.~> Barrel having motion in addition to axial, rectilinear |
| 164 | DF | .~.~.~> With breech lock latch |
| 165 | DF | .~.~.~> Long recoil {3} |
| 169 | DF | .~.~.~> With accelerator and/or unlocking lever for breech mechanism |
| 170 | DF | .~.~.~> With barrel latch |
| 171 | DF | .~.~.~> Nonrectilinear breech block motion (e.g., tilting rotary) {1} |
| 173 | DF | .~.~.~> Sliding locking member |
| 174 | DF | .~.~.~> Rotary locking member |
| 175 | DF | .~.~.~> Toggle locking member |
| 176 | DF | .~.~.~> Pivoted locking member |