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Serviceability Chart - Rifles, U.S., Cal. .30, M1, M1C, & M1D |
|
Item |
In The Hands Of Troops |
To Accompany Troops Overseas |
To Be Placed In Storage For Reissue |
|
Finish |
Exposed surfaces should be dull enough to prevent glare |
Intact enough to prevent glare |
Approximate new finish |
|
Stock |
Not damaged to the extent that will affect strength |
Seasoned checks, small dents and insignificant cracks are acceptable |
Approximate appearance of new stock. Should be sanded and refinished if necessary. Patch work and reinforcing that does not affect strength is acceptable |
|
Hand Guards |
Not damaged so as to affect strength. Looseness when assembled to the rifle is acceptable |
Seasoned checks and cracks which are not critical points are acceptable. Looseness when assembled to rifle is acceptable |
Seasoned checks and cracks which have been reinforced by pins are acceptable. Looseness when assembled to rifle is acceptable |
|
Bore |
Pitting less than the width of land or groove and less than 3/8" long is acceptable |
Fine uniform pitting but with sharp lands is acceptable |
A few fine pits but with sharp lands are acceptable |
|
Breech bore |
Max 0.310 |
Max 0.306 |
Max 0.305 |
|
Barrel Dia. |
Min 0.5995 |
Min 0.5995 |
Min 0.5995 |
|
Gas Cylinder |
Max 0.5320 |
Max 0.5320 |
Max 0.5320 |
|
Headspace |
Min 1.940 |
Min 1.940 |
Min 1.940 |
|
Piston Diameter |
Min 0.525 |
Min 0.525 |
Min 0.525 |
|
Trigger Pull |
Min 5-1/2 lb |
Min 5-1/2 lb |
Min 5-1/2 lb |
|
Trigger Pull |
Min 4-1/2 lb |
Min 4-1/2 lb |
Min 4-1/2 lb |
|
Firing Pin Protrusion |
No check |
No check |
Min 0.044 |