The ornamental design for a boltcarrier, as shown and described.
FIG. 1 is an isometric view of a bolt carrier in accordance with the present disclosure;
FIG. 2 is a further isometric view of the bolt carrier of FIG. 1;
FIG. 3 is a front elevation view of the bolt carrier of FIG. 1
FIG. 4 is a right side elevation view of the bolt carrier of FIG. 1
FIG. 5 is a left side elevation view of the bolt carrier of FIG. 1;
FIG. 6 is a top view of the bolt carrier of FIG. 1;
FIG. 7 is an enlarged isometric view of the bolt carrier of FIG. 1; and,
FIG. 8 is an enlarged isometric view of the bolt carrier of FIG. 2.
The broken lines in the Figures represent portions of the bolt carrier that form no part of the claimed design. The dot-dashed-dot broken lines depict the boundary of the claim and form no part of the claim.