Just finished my home made tactical bolt handle. Check it out.
JB Weld Steelstik putty from walmart: 4$
High Temp Black engine enamal from my garage: Who knows, I've had it for years
I used a 7/8" 6 point socket as a cast. Coated the inside with shoe polish for a release agent, filled it with the JB Weld putty and then squished it over my bolt handle.
Layered some putt on the back side of the bolt handle as well.
Let it sit for a bit and pop the socket off.
After hardened I hit the edges on my grinding wheel and went to work on the base with my dremel.
Hit it with a few layers of black engine enamel, dry and hit with some 2K grit wet sanding. I lucked out hard with the color match, looks reallly realllyyy close.
Has some nicks in it I didn't care to fill and resand but overall I'm thrilled with it.
http://oi68.tinypic.com/4s1s8n.jpg