Sunday, October 31, 2021

Construction a powerful AR-15 -- Lower Receiver

 Lately, I'd taken on a growing fascination with firearms and decided to get an AR-15. I'm sort of a cheap-o, so I went with the DIY route. Basically, the AR-15 is divided up into two parts - the lower and upper receivers.


The reduced receiver is composed of 3 main items:


1) Stripped lower receiver - basically a piece of metal with holes and openings, no moving parts

2) Lower Parts Kit (LPK) - contains all of the parts you'll need to complete the lower and assemble the trigger, trigger guard, hammer, magazine catch, and bolt catch

3) Stock - all of these vary in styles, from fixed A2 style to 6 position collapsible stocks


I discovered my DPMS stripped lower receiver at a nearby gunshow. I would highly recommend that you check out a weapon show before ordering online/locally. Usually, there are some decent deals around and you won't have to cover the FFL transfer fee as you'd if you bought it online. In addition, the only part that's regulated by the government may be the stripped lower receiver. This means that background checks and laws apply to lower receivers the same way they apply to totally completed rifles, pistols, etc. On the plus side, when you have the stripped lower receiver, you are able to order/buy all of those other parts without the hassle and have them shipped right to your door.


For the lower parts kit and stock, I went with DPMS. This is because I acquired a great deal at SportsmansGuide.com on the parts and I was trying to keep things as cheap as possible skeletonized ar 15 receiver set. I finished up paying $50 shipped for the LPK and $50 shipped on the 6 position stock.


Putting the lower receiver together isn't very difficult, but it will get frustrating at times. I used this guide from the AR15.com forums from start to finish. I recommend that you print out the guide first, lay your parts out as shown in the diagram, then begin assembling the lower. No special tools are needed, however, you may wish to have some punches to punch in the roll pins. You can just get the standard pin punches, no dependence on specialized roll pin punches if you wish to save some cash.


I started assembling the lower without the punches, however when it came time and energy to punch down the trigger guard roll pin, I was wishing I'd one. Wanting to improvise, I used my Swiss Army multifunction tool to hammer in the pin. After at the least 15 minutes, I'd finally gotten the pin in, but left the trigger guard all scratched up from my barbaric hammering. Not just that, but when you yourself have to operate a vehicle the bolt catch roll pin in, you will wish you had a punch. There's not enough clearance involving the pin and the rifle to McGuyver something to operate a vehicle the pin; you need to make use of a punch! Besides that, the rest of the process went fine. Only thing is, I'll desire a CAR wrench to tighten down the stock, but it must be too big of an issue.

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