AR-15 BS Thread

Questions for y'all:
I just got my Ballistic advantage stripped lower. It's my understanding its made by aero. It's not the enhanced with the built in trigger guard but it does say it it's threaded for a set screw to hold the rear detent spring down. The AERO lpk i'm looking to order is the standard kit with no FCG or grip. It doesn't come with the set screw though. Is there another kit that is the same kit but has the set screw included? I can also order the aero m4e1 field repair kit that will come with 2 set screws and all the replacement parts I could lose for just $12 or I could just run the detent spring held down by the backing plate without the screw right?

 

From looking at the picture and description on their website the Aero LPK minus FCG appears to come with that set screw.

https://www.aeroprecisionusa.com/ar15-lpk-minus

"4-40 Set Screw (for threaded takedown pin detent hole)"

If it doesn't PM me. I have one or two I'll send you for free.

Yes. I'm doing this on mine.

 

Thanks! The ar15safespace aero lpk has the same sku : APRH100385C as the lpk on the aero site that shows the screw and list it in the parts. Hopefully the site just ar15safespace site just isn't updated. I just order the kit and hope it comes with one. If not I may be reaching out to you for one. I appreciate the help! I've built many lowers but never had the fancy screw before haha.

 

I tried to get the set screw in 3 or 4 times before deciding it wasn't worth it and wound up just going the traditional route. I've seen videos of people trimming the spring to make up for the length of the set screw and make installation easier but I prefer not to trim springs.

 

Never thought about that being an issue. I watched a youtube vid from ballistic advantage of them installing one and they didn't even mention the set screw or the fact the lower was threaded for one haha.

 

I bought a tap and set screws and did this on my first PSA lower, and had left over screws to use on my Aero lower later on. I trimmed 3-4 coils off the spring each time. Wasn't too hard of a time.

 

I put set screws in all of mine. Don't understand the problem with cutting the spring down. Trying to thread the screw in without doing that is futile.

 

Mail call

 

I need to grab another lower just for the fun of it.

 

I only have plans for 2 of these(already have a rifle and pistol lower). The folder will have a Strike Industry short pistol buffer kit with Cry Havoc quick release barrel adapter. 1 Aero will become a SBR lower. The other Aero and 2 17 Designs will be set aside for a rainy day.

 

you always need one when you dont have one

that is always the issue

 

So did you pay 1 transfer fee at your FFL or 5?

 

Paid 2. I ordered them on different days the past 2 weeks. Had the Aeros shipped to one store and the 3 17 Designs to another.

 

No a bad deal. I would hate for my FFL to charge me for multiple transfers all in one order

 

Save some of the lowers for the rest of us!

 

That sucks. I agree, I wish dealers would tone down on the tranfer fees. They literally are just getting free money in the first place.

 

Not exactly. They're paying someone to help you and they accept a certain amount of liability for every 4473 they do. If that gun turns up on a crime scene guess who is eventually going to get a call. If it's a used gun that happens to be stolen (actually happened to a shop in my town) guess who is getting a phone call.

Edit: Also, the paperwork starts before you get there and continues after you leave. It has to be transferred to the dealer's "bound book" before they can transfer it to you, then back off once it's transferred. If an individual is buying multiple 'handguns' in one day there's also a report that has to be sent to BATFE that can take some time to generate and properly submit. Just imagine the typical government bureaucracy bullshit then think about what you would charge someone if you had to do all of that for them.