| ***My research has shown that the following information on bolt guides is not as consistent as other information contained on this website.*** | |
| 1. |
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No Bolt Guides Production Dates 1873-1874 |
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| 2. |
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Small Bolt Guides Production Dates 1874-1895 |
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| 3. |
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Large Bolt Guides Production Dates 1896-1940 |
