On 9/23/2010 10:13 PM, Larry Jaques wrote:
On Thu, 23 Sep 2010 21:53:36 -0500, "David R. Birch"
wrote:

Durable cheap finish for home built receiver

I recently finished a home made AR-15 receiver made from 304 SS and
6061-T6 AL. Now I want to give it a cheap flat black or dark gray
finish, preferably something I can spray on and maybe bake in the oven.
I remember a discussion something like this a while ago, but I can't
locate it.

Any ideas or suggestions, either for the process or locating the discussion?

http://www.midwayusa.com/viewproduct...tnumber=350951
$5.69 for manganese phosphate Hot Parkerizing chem.
Google RCM for "parkerizing" for tons more discussion.

Will this work on aluminum and stainless steel? I doubt the crystals
will coat these.

David