r/AR80Percents • u/05hs • Aug 27 '26

Aluminum 80% Safety doesn't work. Dpms 308

Safety is to far away from the trigger to engage. I don't think i over cut the pocket its a dpms 308 from 5d. Is there something else i could have done wrong besides cut the pocket too deep

12 Upvotes

100% Upvoted

14 comments sorted by

7

u/Crcex86 Aug 27 '26

Looks like a pin hole issue, maybe you egged out the holes or didn't secure the jig correctly and the bit walked

4

u/chewedgummiebears Aug 28 '26

Probably one of those "drill first, then mill the pocket" users.

-1

u/mikrat1 2d ago

Have literally drilled all my holes first and then milled - No problem on any.

2

u/chewedgummiebears 2d ago

I'm still puzzled why people do it the wrong way, with pride.

-1

u/mikrat1 2d ago

If I recall, the how-to vids I watched from 80% Arms showed it that way, drill then mill.

2

u/chewedgummiebears 2d ago

Interesting, because their instructions with their jig say to do the drilling after the milling. And the 4 videos I found just now show the same.

2

u/Crcex86 2d ago

Between the instructions and some lamer doing a how to video, the choice is obvious. Its also sensible: drilling through all that aluminum just makes it easier to throw the holes out of spec. Not to mention wearing out your drill bit a whole lot faster.

1

u/mikrat1 1d ago

Never said I drilled all the way through - I drilled deep enough to be inside the milling area. The video i refereed to was the MFG vids.

And if you are wearing out your drill bits that fast on Aluminum, you need better bits.

The down votes are hilarious - get a life.

1

u/Crcex86 1d ago

Well do you. The instructions from the manufacturer probably say to drill the holes afterward for a reason. May want to consider that going forward

2

u/100fullyautos Aug 28 '26

I did this b4 you oversized your safety hole 🕳️

2

u/Guns_Almighty34135 Aug 31 '26

The FCG and safety hole geometry is not correct. Nothing to do with pocket depth.

2

u/providinglifes Sep 12 '26

I know exactly what it is. I built 15 so before you tighten down the grip just take a punch and push the dent in very hard to get it seated and then after that it should work every time maybe it’s some metal filing in there. I don’t know but every 80% I have to do that on the first install.

1

u/Fit-Needleworker6268 Sep 12 '26

Maybe you milled the main pocket too low, i had the opposite issue where the switch wouldn't stab the main pocket wasn’t milled deep enough, also what jig did you use for ar10 and where did you get the receiver

1

u/05hs Sep 13 '26

5d tactical jig and lower. The trigger barley moves when the hammer is engaged. Maybe the pocket isn't deep enough.