The M642 is a variation on the M42 Centennial Airweight that integrates the time-tested features of the original with modern advancements and competition specifications and features. The 642 is +P rated and has an aluminum alloy frame; stainless steel barrel; cylinder with a matte finish and has custom wood grips and a snag-free enclosed hammer.
| Barrel Length | 1.88" |
| Grips | Finger Grooved Wood |
| Sights | Integral Front/Fixed Rear |
| Frame Size | J-Frame |
| Cylinder Finish | Stainless |
| Barrel Finish | Stainless |
| OAL | 6.30" |
| Frame Description | Aluminum Frame |
| Type | Revolver |
| Caliber | 38 Special +P |
| Weight Range | 9 oz to 15.99 oz |
| FireArm | yes |
| Weight | 14.70 oz |
| Capacity | 5 |
| Hammer Style | Concealed |
| Barrel Length Range | 1" to 1.99" |
| Action | DAO |