AR15 80% Polymer Lowers

[Adrenolin]

The great thing about the 80% lowers, regardless of plastic or aluminum material, is that anyone with an once of DIY in them can make one. Tolerances while best to be exact quite honestly can be off some and the weapon function fine. Taking your time, a few simple and very affordable tools (you don't have to spend more then 100$) and anyone can make one.

Most people initially think it's about saving money which it certainly isn't. Others think it's to have fully unregistered firearms and I guess that's a personal thing though not for me. I like tinkering, working with my hands, being creative and completing a project that's unique and when finished I can say, Made By My Hands. 

[MarkB]

The ATF has now made it more difficult for anyone to complete an 80% lower.  You can no longer go somewhere and rent or borrow equipment to complete the lower.  you can still legally make an 80% lower a complete gun but you need to have the equipment,  You can no longer borrow or rent the equipment or have someone do it for you.  ATF Ruling 2015-01.

http://beforeitsnews.com/alternative/2015/01/batfe-ruling-creates-new-hurdle-to-private-gun-manufacture-3088088.html   

[Adrenolin]

Correction... You were never permitted to have someone else finish or work on an 80% lower for you. You could attend build parties but you technically still had to "press Start" yourself.

[ampb5rider]

As Adrenolin said, it is not about the cost, at least for me when I can buy a lower for 50.00. It really is about "I" did it and it works! The satisfaction is in the doing.