The PatchWorm is the safest bore cleaner available for handguns and rifles.
Made entirely of nylon, it cannot harm the bore or muzzle crown.
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The PatchWorm will pull a tight cotton patch through any barrel, and now comes with a "tail" for easy extraction should the rod get stuck for any reason.
The rifle version has 8 color-coded cleaning heads:
.20 cal (green)
.22 cal (white)
.243 - .284 cal (black)
.308 - .348 cal (red)
.355 - .40 cal (purple)
.41 - .45 cal (orange)
.50 - .54 cal (blue)
12 gauge (yellow)