have a beeman R9 in .177 cal but my breech seal oring just expired, someone can tell me the exact size of that oring?
Beeman R9 question!!
- Thread starter Jlacouturec
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macarri's are grey or dark green, tho : https://www.airrifleheadquarters.com/catalog/item/251485/2425046.htm .22 cal and under.
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