Bolt action firearm with automatic safety mechanism engageable by bolt handle
作者： Jr Oliver M Knode
DOI:
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摘要:
lens.org 参考文章(3)
Rice Rienzi, Bolt-action firearm ,(1943)
Jr Thomas R Robinson, Sear safety actuated by rotation of bolt ,(1958)
Roemer William C, Lines Clifford R, Safety mechanism for firearms ,(1946)