My Toy
Ultimate Member
Over the years I've gotten a number of service grade M1 Garands from CMP. Without exception they have had gas cylinders that ranged from a little loose to really loose. Most of them I have tightened Ala Kuhnhausen Shop Manual. I know these rifles may have been disassembled and re-assembled many times during their service life but it is hard to believe the amount of lateral play in some of the gas cylinders would account for that.
I imagine there were tolerances in the width of gas cyl. splines and barrel grooves and with the mixing of different barrel cylinder combinations the stacking of tolerances could account for this.
I recently purchased 2 CMP Special grades in 308 that were several years old from GB. One was unfired and the other was fired very little. They both have newly mfg. Criterion barrels and the gas cylinders are tight as a tick on the barrels. I have to say they may be my most accurate Garands.
Anyway I got to wondering about the fit of the gas cylinders to barrels on newly mfg. Garands back in the day. I have never held and unissued or never fired Garand from the WW II era. Does anyone have an answer to my title question?
I imagine there were tolerances in the width of gas cyl. splines and barrel grooves and with the mixing of different barrel cylinder combinations the stacking of tolerances could account for this.
I recently purchased 2 CMP Special grades in 308 that were several years old from GB. One was unfired and the other was fired very little. They both have newly mfg. Criterion barrels and the gas cylinders are tight as a tick on the barrels. I have to say they may be my most accurate Garands.
Anyway I got to wondering about the fit of the gas cylinders to barrels on newly mfg. Garands back in the day. I have never held and unissued or never fired Garand from the WW II era. Does anyone have an answer to my title question?