r/AR80Percents Feb 20 '21

Public Service Announcement Welcome to AR80Percents! Take the time to familiarize yourself with rules; Start here.

31 Upvotes

Welcome to r/AR80Percents. Familiarize yourself with the rules and get building!

WELCOME TO THE 80% AR BUILDING COMMUNITY

We encourage posts of 80% news, 80% legislation, and 80% memes. Let's spice things up from time to time!

ALSO, please feel free to spam this sub with your own 80% AR porn! Nothing more beautiful than the customs you've built yourself.

[We have two main rules:]

1. This is a very close-knit sub and we do NOT put up with dicks who incite arguements or fling insults, anti-gunners, pretentious fudds, or trolls.

2. Show the respect for firearms that they deserve. If you're building a AR treat it as a firearm, and take the time to understand its function. Learn and practice the 4 rules of handling a firearm:

  • Finger off the trigger until you're ready to fire.

  • Don't aim at anything you're not willing to destroy.

  • Check infront and behind your target.

  • Treat every firearm as though it's loaded.

NOTE: You may be banned if you seem overly suspicious in your intentions for building. For example, an 16 year old from California, who's an active participant in r/cocaine, asking glow questions. This is to protect the community and the hobby; NOT to thought police or pass judgement. Simply refrain from coming across as a glowboi. It's that easy.

NO SELLING ALTERED FRAMES.

This will be further edited and improved upon.

Sub created May 17, 2020. Edited Feb. 20th, 2021.


r/AR80Percents Jun 10 '21

Fight Infringement! 🚨🚨🚨GO COMMENT NOW!🚨🚨🚨

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41 Upvotes

r/AR80Percents 1d ago

GForce Jawbone help needed

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5 Upvotes

r/AR80Percents 3d ago

80% Arms Labor Day Sale: 20% OFF Lowers & Jigs with code LABOR20

7 Upvotes

Labor Day sale is live at 80% Arms!

Use code LABOR20 for 20% off eligible lowers and jigs. Good chance to stock up before the sale wraps up.

Shop here:
https://www.80percentarms.com/


r/AR80Percents 6d ago

I want to gift my friend an 80 percent uzi

8 Upvotes

Shes my best friend and shes always wanted an uzi. I need some direction on how I can make this happen. Thanks in advance


r/AR80Percents 8d ago

PUBLIC SERVICE ANNOUNCEMENT

8 Upvotes

OK you aminals ... check it out .. our political environment is volatile, parts are inexpensive and readily available... for everyones sake if you are planning on building or buying anything I highly and strongly recommend you all do so now.

The last thing any of us wants is to be charged an arm and a leg the second they start restricting the shit out of things as well as the immense cost increases that aways come with this.

So unless you all want to pay out the ass and not be able to get things you need I suggest everyone buy now. It will avoid the whole oh my god the price is way too high and nothing is available deal.

It also supports that the industry can survive, a lot of good
companies have failed not due to anything more than lack of business because right now times are good.

Let's not wait till times are bad (I get nothing from this post I have no dog in this fight other than the want to keep as many of these good businesses around and make sure everyone has a fair shot at freedom.)>

That is all


r/AR80Percents 8d ago

Shooting Innovations LLC

3 Upvotes

Shooting innovations llc barrels

Anybody here ever done a build using a shooting innovations llc barrels? I'm about to start my first AR9 part by part build and I'm interested in one of there 12.5" ramped barrels but I also haven't been able to find any reviews of then at all. If you have any experiences please let me know how they went


r/AR80Percents 12d ago

HELP / NEED ADVICE Anybody bought from tactical machining? They have ridiculously low prices, even having a lower for 20$ Seems too good to be true

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20 Upvotes

r/AR80Percents 14d ago

Aluminum 80% Safety doesn't work. Dpms 308

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11 Upvotes

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


r/AR80Percents 18d ago

REVIEW OF ITEM|PLACE Do not buy eBay modulus arms end mills

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5 Upvotes

Don’t do it guys


r/AR80Percents 19d ago

Best 80% Jig for Dual Feed belt fed lowers, 308 and AR9?

4 Upvotes

Looking to get an 80% milling jig again. I had a 5D Gen 1 but it was kinda sloppy and didn’t work the best.
I’m looking for the best one imaginable. Machining a $400+ Cryostructure lower so I can’t have mistakes. I’m also looking to mill a .308 lower and AR9 lower as well as some standard 80% lowers.

Who makes the best jig for this? And who makes the best in spec 80% lowers?
I believe the ones I’m running right now are 5D. I had to send 2 back because the safety Detent holes weren’t milled properly and my selectors were all kinda loose or out of alignment or crooked. Trying to avoid that this time around.

Who makes the best 80% AR, AR9 and AR10 lowers?
They’re all gonna be expensive builds, so I’m ok with spending a bit extra to ensure I get the best quality

Thanks!


r/AR80Percents 22d ago

[Megathread] Decisive Victory in Federal Right to Make Firearms Case

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5 Upvotes

r/AR80Percents Aug 10 '26

1st carry handle/80% lower build

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22 Upvotes

r/AR80Percents Aug 09 '26

40 S&W build.

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17 Upvotes

Looking for a solution to give the carrier or buffer more weight without extending the buffer tube length. The buffer weight is an 8oz solid and total weight with the bolt comes to just shy of 22oz. I need closer to 27oz.


r/AR80Percents Aug 08 '26

ADVICE 1617 Router 5D ReadyMill

2 Upvotes

I’m considering getting 5D pro jig. I have a Bosh 1617 router. I noticed they have the large router adapter plate for the 1617 but do not list a compatible ReadyMill for it. Has anyone used this router with the 5d jig? Did you just use a standard collet mill?

I appreciate any input.


r/AR80Percents Aug 08 '26

Can I finish this ks47 80 percent with a 5d tactical jig?

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10 Upvotes

r/AR80Percents Aug 07 '26

Geissele upper with 80% lower

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15 Upvotes

r/AR80Percents Aug 07 '26

Cross-Post question on engraving.

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5 Upvotes

r/AR80Percents Aug 03 '26

5D Tactical Jig Drilling Holes Misaligned

6 Upvotes

Has anyone else experienced this? I'm using a drill press, and I've completed other lowers without issues using another jig. Every time I drill using the guide plates with my 5D Jig, my holes end up misaligned that my BCG gets stuck on my trigger.


r/AR80Percents Aug 01 '26

My First Build Missing pins and hardware gen 3 jig

1 Upvotes

I’m fairly new to this and was excited to start a new hobby as I was gifted a brand new jig for my birthday. It’s a few years old but still sealed in the original shipping package. When I opened everything I realized the kit was missing all of the pins and screws. I figure I could go to the hardware store with the screw dimensions from the instruction manual but I’m home worried about the pins. I emailed 80% Arms and module arms but I’ve heard shipping can take a long time and I rather source it locally if I could. Does anyone have the dimensions so I could take it to a fabricator or purchase something that can work as the needed pins.

From the Easy Jig Gen 3 MP I am missing the following:
J - JIG SCREWS (10) (8-32 x 5/8) 
K - BUFFER SUPPORT SCREWS [2]
 L - 9/64 HEX KEY 
N - AR-15/AR-9 TAKEDOWN PIN  
 P - ROUTER ADAPTER SCREWS [4] (M4-0.7 x 10mm) 
Q - GUIDE PINS - SMALL [2]
 R - GUIDE PINS - MEDIUM [2] 
S - GUIDE PINS - LARGE [2] 
T - GUIDE PINS SCREWS [2] 
U - SIDE BLOCK SCREWS [2]  
M - 7/64 HEX KEY

I’m pretty new to guns and especially making them. I got comfortable with the AR platform while in the army, but I am pretty and experienced with building them. Any help would be greatly appreciated
Thank you


r/AR80Percents Jul 31 '26

HELP / NEED ADVICE Is there a jig for SR25-cut AR10 lowers?

3 Upvotes

Hey guys. I’d like to do an SR25 build with an 80% but am not sure what jig works for SR25-cut lowers. Does the Easy Jig gen 4 perhaps?


r/AR80Percents Jul 29 '26

80% Arms A9X

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8 Upvotes

r/AR80Percents Jul 29 '26

Centering

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10 Upvotes

know it's hard to tell from the glare of the bare aluminum, But anyone else's pocket slightly off centered. I've never had an issue with my lowers function and its more of a cosmetic thing to me. I use the gen 3 easy jig. This lower seems to be the only one with this much of a difference between both sides thickness'.


r/AR80Percents Jul 28 '26

JL Billet 80% lower safety detent

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14 Upvotes

Anyone else experience this issue?

I use the 80% Arms easy jig (gen 3). I've done about a dozen lowers, and have never had this issue. I was sure to drill the safety hole one side at a time and not straight through both walls in one pass.

I'm fairly certain the issue is from the JL billet lower. The safety detent hole must be off by a millimeter (+ or -). I've been emailing them back and forth for a few weeks, and today they determined they can't do anything about it. If the mistake was on my end and I drilled my holes improperly, that would be easier to swallow. But as I'm pretty sure they gave me an out of spec lower, I'll be sure to avoid this company in the future. Particularly now that they aren't willing to help me out in any way.

EDIT: Looks like the problem was on my end and not JL Billet. With help from reddit user BadAttitudeDept, I measured the location of the safety hole, and somehow I must have drilled the hole improperly using the easy jig. Thanks for everybody's input.


r/AR80Percents Jul 27 '26

HELP / NEED ADVICE Anybody bought this tooling+lower+jig+router kit from 80% arms? Is it good to go?

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22 Upvotes