Rifle handguard assembly having outer shell with outer and inner liners
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United States of America Patent
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-
May 12, 1987
Grant Date -
N/A
app pub date -
Dec 30, 1985
filing date -
Dec 30, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A generally round handguard assembly (10) for a rifle barrel (18) has substantially identical bottom and top mating sections (26, 28). The handguard assembly has a shell with an upper and lower row of vent holes (36) formed by two shell sections (31), an outer liner, formed by two outer liner sections (35), with upper and lower rows of vent holes (58) and an inner liner, formed by two inner liner sections (33), with upper and lower pairs of laterally opposed rows of vent holes. An outer annular volume (94), an intermediate annular volume (92) and an inner annular volume (90), which are in fluid communication, are defined within the shell by its inner periphery and the liners. Air flow in the inner volume cools the barrel and gas tube (22) and air flow in the outer and intermediate volume maintains the shell at a reasonable temperature during repeated firings.
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