| CALIBER QUANTITY PER RIFLING TURN | 1 TURN IN 33.333 CALIBERS |
| FSC APPLICATION DATA | MACHINE GUN,CAL..30 |
| GROOVE WIDTH | 0.167 INCHES MINIMUM AND 0.177 INCHES MAXIMUM |
| LAND WIDTH | 0.075 INCHES NOMINAL |
| OVERALL LENGTH | 23.780 INCHES MINIMUM AND 23.900 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-11595 MIL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL COMP 4150 |
| RIFLE BORE GROOVE QUANTITY | 4 |
| RIFLING DIRECTION | RIGHT-HAND |
| SIZE DESIGNATION | .30 CALIBER |
| SPECIAL FEATURES | BARREL HARDNESS,BRINELL 277 TO 331 |
| WEAPON MODEL NUMBER | M1917A1 |
| WEAPON SIZE DESIGNATION | .30 CALIBER |
| SURFACE TREATMENT | PHOSPHATE ZINC OUTSIDE |