Ok to send off for anodizing?

[CrookedShooterSD]

Hi Guys, need some opinions for this build. I used a modulus arms jig to finish this lower. When I got to the final depth, i noticed that the mill was cutting more material when I passed over a previously milled area. I verified that the router bit had slipped a little and so I readjusted to final depth and made a pass again to make sure I got everything. When you look in the FCG pocket, you can see that its been cut a bit deep. I dont have an LPK on hand so I cant do a test fit, but does anyone think this will affect operation? I'm going to schedule an appointment for anodizing in the coming weeks.

[ar15barrels]

As long as your receiver is marked with the manufacturer, city, state and serial number and the anodizer is an FFL, you can just mail it to them and they can mail it back to you.

[9mmrevolver]

Can u send a receiver to someone in the mail to have that done Randall? I'm at the same stage as the op. What are my options?

[CrookedShooterSD]

Thanks for responding, but I have an anodizer on deck, my question is should I have it done. My fcg pocket got messed up a bit. Im asking if it should be anodized despite the fact that I cant function check at this time and the pocket it most likely out of spec a bit

[Gunsmith Dan]

As long as you actually have a bottom on your FCG pocket for the trigger spring legs to rest on you should be ok. The springs are not that strong so as long and the bottom does not deform by pushing on it with your finger you will be ok. Remember that the trigger and hammer are supported by the pins on the sides and those holes are the ones that are critical to the proper functioning of the lower FCG.

[CrookedShooterSD]

Good insight Dan, I should probably pick up an LPK to make sure everything fits

[ar15barrels]

Im asking if it should be anodized despite the fact that I cant function check at this time and the pocket it most likely out of spec a bit

I sure would not do that.

[Chewbaca]

id test fit everything first and make sure it works before id anodize it.

[Nathan Krynn]

Just pull a hammer and trigger from another rifle and see if it works.

There is no difference in sending it to an anodizer or an engraver. It is a transfer either way. To legally transfer it you need the following like any other manufacturer as you are the legal manufacturer now.

model
cal
full legal name
city
state
S/N

The S/N needs to be 1/16" in height, all need to be visible and legible and at least 3 thou AFTER coating. We go 8 - 15 thou as if you turn a 3 thou engraving sideways you cant see it and anodizing add material so we go deeper to cover that.

Basically what every other lower made by a company is engraved you need to engrave. The cool part is you get to make up the model, caliber, and S/n. You do need to use your city, state, and legal name.

WARNING 99% of lasers out there can't go 3 thou into bare aluminum, never mind after anodize.

Nathan

[klewan]

Put it together and function test it before you send it out to get it engraved and then anodized. There have been multiple threads where someone has $75 or more tied up in making it pretty and it don't work and they need to start welding or machining plugs to insert in the pin holes to fix it. Lots cheaper to find that out early than later.

[80% Arms]

You do not need to put a serial number on it to mail or to get it anodized. We are an FFL and we do both anodizing and laser engraving. The company doing the anodizing and engraving MUST have an FFL though.

[ModulusArms]

Hi Guys, need some opinions for this build. I used a modulus arms jig to finish this lower. When I got to the final depth, i noticed that the mill was cutting more material when I passed over a previously milled area. I verified that the router bit had slipped a little and so I readjusted to final depth and made a pass again to make sure I got everything. When you look in the FCG pocket, you can see that its been cut a bit deep. I dont have an LPK on hand so I cant do a test fit, but does anyone think this will affect operation? I'm going to schedule an appointment for anodizing in the coming weeks.

That will function 100%. I wouldn't even think about not using it. There are certainly people who want it perfect but I can tell you that you did better than a lot of people who have made 80% lowers. If you anodize that and put an upper receiver on it you will never know it isn't flawless.

If you anodize that and it doesn't fire because of that machining on the bottom I will give you a new free lower.

[ar15barrels]

You do not need to put a serial number on it to mail or, or to get it anodized. We are an FFL and we do both anodizing and laser engraving. The company doing the anodizing and engraving MUST have an FFL though.

While you are correct, a lot of ffl's won't deal with unmarked receivers as they don't know how to log them in their book.

[Nathan Krynn]

You do not need to put a serial number on it to mail or, or to get it anodized. We are an FFL and we do both anodizing and laser engraving. The company doing the anodizing and engraving MUST have an FFL though.

How deep does your laser cut? We have thought of getting one but the ones that cut deep enough are not fast enough to keep up with production.

[kcstott]

How deep does your laser cut? We have thought of getting one but the ones that cut deep enough are not fast enough to keep up with production.

Nathan
I've got a good friend that had three epilogue lasers in his shop two of which can cut thin material. But they are slow.

Even shallow engraving takes time.

A good cnc machine will kick a lasers butt in speed but a laser will do far better in detail so it's one of those things.