The Fundamentals Of Building A Lower Parts Kit
Posted by Arthur Adler on May 12th 2023
The great thing about the AR-15 is its modular design. For over 50 years, thousands of parts have come up to optimize these amazing rifles to the builder’s desires. Well that’s great for those of us who know how to build an AR-15 from scratch using completely custom parts.
For first time builders though, the building process can be a daunting experience. Unfortunately this deters a lot of people from going the 80 lower route even though, 80 lower built rifles have an increased chance of being higher quality over bought completes that cost a lot more.
In reality, simple things like organization, the right tools, and the proper kit can make all the difference between a good build, a bad build, and a waste of money. Read this article to found out more on the fundamentals of 80 Lower Parts Kits.
When looking for the best AR-15 lower parts kits, it is important to understand what you are getting. Some kits do not come with the essential bits needed to complete the AR-15. Here is everything a kit should have to ensure you are able to build it.
Also look here for our list of great AR 15 KITS
| Trigger Spring | Bolt Catch | 2 – Takedown Detents & Springs |
| Trigger Pin | Bolt Catch Plunger | Pivot Pin |
| Trigger | Bolt Catch Spring | Rear Takedown Pin |
| Hammer Spring | Bolt Catch Roll Pin | Buffer Retainer & Spring |
| Hammer Pin | Safety Selector | Magazine Catch Assembly |
| Hammer | Safety Selector Detent | Triggerguard Assembly |
| Disconnector & Spring | Safety Selector Detent Spring | Pistol Grip |
Usually 80 Lower Parts Kits will have all these pieces and organized into their respective groups.
It really isn’t as hard as it looks. In fact, there are many outlets out there giving their own guides on building an AR-15 lower parts kit from the ground up. Thunder Tactical provides information every week detailing the proper tools, which we will list again in this article, as well as guides on how to build, what to look for in quality, as well as legal updates regarding 80% lowers.
Proper Tools
Literally anyone with a hand drill and the proper bits can build an 80 lower from a lower parts kit. Here is a list of the required tools to complete your 80 lower AR-15.
- 80% Lower Jig
- 5/32” Drill Bit
- 3/8” Drill Bit
- 5/16” Drill Bit
- 3/8” End Mill
- Dremel with 1⁄4” Grinding Head
- Drill Press Vise
- Drill Press
Building an AR15 is not as hard as it looks. And with these tools, you will be able to build your 80 lower parts kit in no time. Visit Thunder Tactical to get more news on AR-15 as well as great deals on parts and accessories to optimize your dream rifle.