Smart Parts Boss Progressive 14" Black fits Smart Parts ION threaded markers
Smart Parts' legendary and patented technology in a barrel for everyone.
· Shoots straight and quiet
· Hard anodized aluminum
· Smart Parts legendary Smart Tuff coating
NOTE: Because barrels and bases differ only in threads, a single image may be used for multiple barrel thread types. The threads pictured may differ from the actual threads of the barrel listed. Please refer to the description for actual barrel being purchased.