My boy screwed up my 80% is it fixable

[lovemyguns]

So my boy wanted to complete his own 80% lower and I told him to wait until I got home to help him. Did he listen, NO, he saw a youtube video and decided to go ahead with the project alone. I get home and he tells me he messed up and if I can fix it. He said he had a problem because the jig side bolts and nuts are not flushed so he could not get it flat onto the press bench. Drilled all the way through on trigger slot and are to far apart. He bought one from an outfit in San Diego for $70 so I don't know the answer but can I fill it back up with a blob of aluminum and redo it? Any help will be appreciated. I told him to wait because I got my bridgeport running now but kids...here are some pics..

[Carsgunsandchics]

Just a heads up, if he machined it it's now his receiver with bad holes.

Yes you can weld up the holes and he can try again, but there might still be some problems later to keep an eye out for.

[lovemyguns]

Just a heads up, if he machined it it's now his receiver with bad holes.

Yes you can weld up the holes and he can try again, but there might still be some problems later to keep an eye out for.

Problem like what..

[Carsgunsandchics]

Loose pin holes at times, or voids in the weld. Usually remedy would be anti-walk pins if needed.

[hermosabeach]

OP
If I read your post correctly, the trigger pin holes are in the correct placement and size, but the cut out where the trigger goes through to the trigger guard is the issue?

The two holes drilled are too far apart so the opening under the sear will be large.... is this the issue?

[greg36f]

Not sure what these cost, but it seems that it's not worth whatever problems could occur. It's like putting a cracked frame under your prized project car. Why start off with a flaw? It's Just not worth it.

[Vertigofirearms]

Make this into a lesson, Firearms are no joke, doing it wrong will incur severe consequences. Discipline your son for not following YOUR directions by recycling the lower.

[jsigone]

call it lesson learned and get another one. If you do get another, practice on this one since it's scrap anyways, might as well "learn" off it. Things are always easier 2nd time around as its fresh in the mind.

[saki302]

If it's just a bad trigger hole on the bottom, it's cosmetic- the lower will function fine if the hole is a bit too big.

[lovemyguns]

OP
If I read your post correctly, the trigger pin holes are in the correct placement and size, but the cut out where the trigger goes through to the trigger guard is the issue?

The two holes drilled are too far apart so the opening under the sear will be large.... is this the issue?

Yes....

Yes trigger pin holes and selector hole are correct place and size, its the two trigger holes and depth that is off and a small area of the hole. Can I melt a blob of aluminum back into it or fill it in with some JB weld.

[baih777]

If you have someone that will weld it for free then get it done. If you have to pay to get it welded then scrap it and get a new one. The weld will Anodize a little different color. If you paint it you should be OK.

[lovemyguns]

If you have someone that will weld it for free then get it done. If you have to pay to get it welded then scrap it and get a new one. The weld will Anodize a little different color. If you paint it you should be OK.

I can do it for free myself and was asking if I could fill the slot back up with aluminum and just redo it.

[Pearlpower]

Even if you could make it usable, would you want to, that would be my question. Live and learn, we all screwed up a few things in life. Recommend practicing on that reciever more, then once your comfortable, buy a new one to machine for your weapon.

[autoduel]

If it's just a bad trigger hole on the bottom, it's cosmetic- the lower will function fine if the hole is a bit too big.

This.
Depends why you are doing an 80% instead of buying a stripped lower.
It's only a longer slot, and no one looks at that part of the gun anyway. If you think tossing it is worth the time spent on it and cost of a new billet 80% for a cosmetic blem, it's your choice.

[greg36f]

I can do it for free myself and was asking if I could fill the slot back up with aluminum and just redo it.

Yes you can, but no you should not.

Are there any concrete reasons for not doing it, not really but there are so many possible issues that it's just not worth it; not for what? A hundred bucks?

Practice drilling with it and toss it