A few times a year, the CMP holds an M1 armorer class. At the end of the class, you go home with an M1 that you assembled and that’s pretty much guaranteed to work. Assembling an M1 has a little more gunsmithing involved than the shake-the-box assembly of an AR series rifle or the “make it approximate and it’ll work” construction of an AK. There are special skills — like lapping bolt lugs — and special tools required. Here’s the end product:
Fortunately, CMP has the tools, jigs, fixtures, and most of all, the tribal knowledge to not only help you get your M1 right, but also to understand it and how that clever little Acadian intended for it to work in the first place.
Unfortunately, the annual quota is opened once the dates are set, and fills up in minutes. So it seems to be an insidery thing, to which we, and probably you, are all outsidery.
Fortunately (again! It always comes back around to fortunately) for all of us, blogger Keads (whom we don’t know, but think we might like), was one of the lucky attendees, and spent some of his time not just building a sweet Service Special Grade M1, but also documenting the process in three informative and photo-rich blog posts.
- Part One: Begins with a tour of the plant and its facilities — including pallets of ungraded, yet, M1 rifles, vast metric craptons of ammo, and , of all things, an ultra-high-tech air gun range used by Olympic hopefuls. Then it gets M1-active, with the mating of barrel to receiver and reaming the barrel to proper headspace. One of the first specialty tools, a receiver wrench, shows up here (in a reverse of AR practice, the M1’s barrel is secured in a vise, and the wrench is used on the receiver). The bolt lugs need to be lapped for proper mating with the receiver’s locking lugs. Go to Part 1.
- Part Two: With the receiver barreled and the barrel reamed to proper headspace, it’s time to start assembling the parts that turn a barreled receiver into an M1 Rifle action. The CMP armorers assist as the students raid the parts bins for inspected and refinished parts. The op rod has a special gage for both dimension and trueness, or correct “bend.” The trigger mechanism was, to Keads, the hardest thing to assemble. The class did both early and late M1 rear sights. Finally the fully assembled M1 barreled action goes into a new walnut stock — more hand-fitting is called for. Go to Part 2.
- Part Three: In the conclusion of the piece, the students hit the CMP store (MOAR GUNZ!) and final-prep the rifle (in Keads’s case, redoing the trigger) for test fire. You can take your rifle home or ship it (which makes a difference to which tax, if any, you pay). Here’s a snip of what Keads had to say, in retrospect, about the whole experience:
My thanks to the Armorers John, Ryan, and Chris. My thanks as well to the person that herds the cats around the Custom Shop and made sure our paperwork was in order and all the other ancillary tasks that made sure the class went well, Deshay. …. If you desire to own one and learn more about it, I cannot say enough about this class or the CMP. They have both the passion and the knowledge of these tools and it shows. It is one thing to be a subject matter expert and another to relay that knowledge to others.
For those that can’t attend the class, at least you can buy one of the CMP rifles. If you do wither of those two things, of course, you may need this link afterward. Just helping ya out.
Hat tip for this story, the incomparable Tam.