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Thank you!
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Quote History Quoted:Quoted:Quoted:So to answer the OP's question, and just as a fyi I haven't personally used them but they are always recommended and hold a FFL to do this type of work
US AnodizingBut you may need some type of mark on the lower for them to enter it into their log book (this is typically up for debate but a lot of the FFL smiths are requiring it to cover their six)
US anodizing is the answer.
You shouldn't need to have the lower marked, but I would contact US Anodizing to be sure.
If you do need some sort of SN on it, pick up some 1/16" number punches from brownells and stamp a number on your pistol grip tang.
Thank you!
I emailed victor@usanodizing and ask him:
"Can you anodize a completed 80% AR 15 lower that I completed into a firearm without any markings on it?"
He sent me this back (in a PDF, copied here):
INSTRUCTIONS
Check List
For sending your new "prototype” lower receiver for Anodizing:
1. Make sure your receiver is clean and free of any oil, or cutting fluid.
2. Make sure all sharp edges are rounded or de-burred.
3. Allow for .0012 -.0020 film thickness (build up) during machining.
4. Make sure the receiver is stamped or engraved with the following; Manufacture’s Name, Model, Caliber, and Serial Number.
5. Evenly blast the receiver surfaces with 100 grit @ 40-50 psi. Repeat Evenly!
6. After surface prep, do not contaminate the surface with finger prints or oil.
7. Package the receiver with clean packaging material, not newspaper.
8. Provide the following items with your receiver:
A. Let us know what color to anodize your receiver, Black or Gray.
B. Include a Prepaid return shipping label, so we can ship the package back.
C. If you are a licensed dealer or manufacture, please include a copy of your FFL.
D. If you are not an FFL holder, please include a copy of a valid picture ID. The address on the picture ID, must match the return shipping address.
E. Include payment via Check or Money Order.
The price to anodize your lower receiver (Per MIL-A-8625F, Type III, black or gray) is $75.00, plus shipping. If you need us to do the surface prep, add $25.00 for the extra labor. If you do the surface prep, we are not responsible for un-even color or texture.
Please allow approximately 4-6 weeks for processing your receiver. Any deviations from our instructions listed above, can result in delays. Or worse, we will not be able to return the receiver directly to you.
Notice: If you reside in a State that restricts you from sending your receiver out for finishing, please do not send it. Or, we cannot send it back! Please check with a local Federal Firearms Licensed dealer (FFL), State Police, or BATF for more information.