Guns with exterior surface configured barrels

Firearms – Barrels – Materials or coatings

Reexamination Certificate

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C089S014050, C042S076010

Reexamination Certificate

active

07013592

ABSTRACT:
Gas-operated automatic and semi-automatic guns are improved by providing their barrels with unique exterior surface configurations to reduce the weight of their barrels while retaining the barrels' original stiffness and to cause the barrels to dissipate heat faster.

REFERENCES:
patent: D283040 (1986-03-01), Holland et al.
patent: D283042 (1986-03-01), Holland et al.
patent: 5577555 (1996-11-01), Hisajima et al.
patent: 5992512 (1999-11-01), Tsuri et al.
patent: 6324780 (2001-12-01), Behling

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