Receiver extension tube for a firearm

What is claimed is the ornamental design for a receiver extension tube for a firearm, as shown.

FIG. 1 shows an isometric view of a receiver extension tube for a firearm.

FIG. 2 shows a bottom plan view of a receiver extension tube for a firearm.

FIG. 3 shows a top plan view of a receiver extension tube for a firearm.

FIG. 4 shows a rear plan view of a receiver extension tube for a firearm.

FIG. 5 shows a front plan view of a receiver extension tube for a firearm.

FIG. 6 shows a left side plan view of a receiver extension tube for a firearm; and,

FIG. 7 shows a right side plan view of a receiver extension tube for a firearm.

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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
May 07 2014	MONTES, KENNETH	PHASE 5 WEAPON SYSTEMS INC	ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS	032864	0573	pdf
May 09 2014		Phase 5 Weapon Systems, Inc.	(assignment on the face of the patent)

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