Today’s post is brought to you by Patrick Shipp, Patrick has served his country down range in Iraq and on the front lines of the energy war in Washington, DC.
Roaming the aisles of The Nation’s Gun Show in Chantilly, VA, it’s easy to become overwhelmed by the sheer magnitude of today’s small arms industry. Nearly every make and model of rifle, shotgun, and hand cannon in the world is there, and eager buyers are salivating at the thought of owning that which the liberal media has made taboo. Among the tables of Colt 1911s, Remington 700s, and Winchester Repeaters, there are a few vendors who are targeting a more discriminating customer; the AR-15 armorer.
Merriam-Webster defines an armorer as “one that repairs, assembles, and tests firearms.”
I wasn’t looking to build the best AR, but wanted to gain a better understanding of how the rifle operates. I began my build with some internet research. There are over 150 individual parts in an AR-15, and all of them must function together in order to effectively send 62 grains of lead towards the intended target. All of the parts can be purchased online and shipped directly to your home, with the exception of the stripped lower receiver. This is the serial number component, and must be transferred to the customer through a Federal Firearms Licensee. I bought my Smith and Wesson M&P stripped lower at the gun show for $130. At the show, I also purchased several Magpul components, including flip-up front and rear sites, a pistol grip, trigger guard, and adjustable buttstock. The remaining components I purchased online from Del-ton (flattop upper receiver), Midway USA (buffer tube, buffer spring, buffer, lower receiver parts kit, and bolt carrier group), and Ebay (replacement buffer tube for the one I over torqued). Where there was an option to, I bought mil-spec components. I switched out the 18” barrel on another AR platform for a 20”, and used the 18” barrel on this build. I found a handguard left over from deployment and got to work.
I went to my local range, Blue Ridge Arsenal in Chantilly, VA, and had the armorer there put the barrel on my upper receiver. There’s a lot that can go wrong, including miss alignment which could affect gas tube alignment, so I went to the pro. He switched out the short barrel, and installed the longer one for fifty bucks. That was money well spent. I did the rest of the assembly in my basement, using Cheaper Than Dirt’s YouTube videos on building a lower receiver and the Army’s TM9-1005-319-23. It’s important to know that all of the components fit together in a specific order. Anyone who has ever tried to repair their car knows what I’m talking about. Step-by-step instructions are essential to success. Watch the video and read the instructions a couple of times for real success. With the lower complete, I replaced the fixed front site post with a gas block with picatinny rails and attached the front and rear sites. I snapped top and bottom together, performed a functions check, and took it to the range. This was the most nerve wracking part. I knew everything had been done correctly, but in the back of my mind, I thought, “what if this damn thing blows up in my face. I’m going to look like an idiot.” One hundred rounds later, and I was satisfied with my work.
No after action review is complete without the obligatory what went wrong, and for me, those are the most important lessons learned. My buttstock has a little bit of wobble when fully extended. Though the buffer tube and buttstock are mil-spec, I can’t help but think that the replacement tube I bought after busting the one from Midway USA was not the correct diameter. The upper and lower aren’t as tight as the pros prefer, though you can purchase a small plastic block that will make the fit snug. I would recommend always buying a matched upper and lower to avoid any wiggle. The bolt carrier group from AR Stoner is snug, and did cause the rifle to fail to cycle completely. I have tried sanding, and will take the Dremel to it sometime soon. After the fact, I read some disparaging reviews on Midway USA, regarding the AR Stoner bolt carrier group. I’d say this is one of the components where you want to spend a little bit more, especially if you’ve incurred some savings elsewhere by catching Magpul and CMMG lower reciever components on sale.
All in all, I’m pleased with the outcome. The final cost to complete, I’d estimate at about $900. You can purchase a complete stock AR-15 for this much, and add the Magpul components for another $150 or so. The bolt carrier group is an easily replaceable part if the Dremel doesn’t work, and the wobble reminds me that I need to look into getting another buffer tube. The feeling, though, of firing the weapon you built, well, that’s just priceless.
See you at the range.