The ornamental design for a lower griphousing for a firearm using an m16magazine, as shown and described.
FIG. 1 is a left side perspective view of a lower grip housing for a firearm using an M16 magazine showing our new design;
FIG. 2 is a right side perspective view of the lower grip housing of FIG. 1;
FIG. 3 is a left side elevation view of the lower grip housing of FIG. 1;
FIG. 4 is a right side elevation view of the lower grip housing of FIG. 1;
FIG. 5 is a top plan view of the lower grip housing of FIG. 1;
FIG. 6 is a bottom plan view of the lower grip housing of FIG. 1;
FIG. 7 is a front elevation view of the lower grip housing of FIG. 1; and,
FIG. 8 is a rear elevation view of the lower grip housing of FIG. 1.
The broken line showing of portions of the claimed design in all figures is included for the purpose of illustrating environment and forms no part of the claimed design.