On an AKM, the ejector is just a protruding tang on the left bolt guide rail. Pappas suggests rounding over the end of the long rivets so they come out of mashing process with an aesthetically pleasing mushroom shape.ĭrop the bolt in, and check the ejector clearance. The rear trunnion is treated similarly as the front trunnion, except we have two long rivets instead of shorties. Some filing of the mag well is normal, but ours needed no attention. The fit of the trigger guard can affect the magazine release, so carefully test the parts with many different types of magazines. The four front and one rear trigger guard rivets get the business. We move on to the trigger guard and spacer. The six short front rivets are crushed into place using the Toth Tool rivet jaws mounted on a 24-inch bolt cutter. Reposition the fixture for each rivet hole. Then slide it around a drill press table to line up the holes with the drill bit, lock it down, then slide the receiver on to drill a rivet hole. Doing so leaves only the rivet core to hold the parts in shear, and the rivet will eventually snap. Some builders mistakenly relieve material from the receiver here to get the swell-neck rivet to sit flush. This is an important step that locks the receiver and trunnion together when a swell-neck rivet is installed. We deburr and chase all the holes with a drill and a Dremel, and dimple the two bottom holes into a matching recess in the trunnion using the press and the riveting jig. We repeated the same process for the remaining five front rivet holes. The hole is drilled and so long as nothing moves, the rivet hole in the receiver and the trunnion are lined up for success. We line up the rivet hole in the trunnion with the bit and clamp the fixture in place, then we slide the receiver into the trunnion. Now that the trunnion is free of the barrel, it’s fixed in the AK Builder drilling fixture. With the pin out, the barrel is pushed out using the hydraulic ram with the trunnion supported by the AK Builder Barrel Press fixture. The work begins with removing the partially installed barrel pin using the Forbus barrel pin tool guiding the hydraulic press’ ram. It’s part of the welded-in guide rail, and it’s usually left long and needs to be filed down to allow the bolt to pass over it. The Work Beginsįiling the ejector in the Childress AKM receiver. With the feeler gauges stacked in the gap during reassembly, they act as a stop, ensuring the barrel is seated at the same depth it was headspaced at. We checked our AK-Builder built barrel and used a set of automotive feeler gauges to record the gap between the front trunnion and the rear sight base. There aren’t many showstoppers on the AKM, but plus or minus a couple thousandths of headspace can result a rifle which fires out of battery or separates the heads from cases. Even so, if there’s one thing, just one thing, that you take away from this article, it’s the importance of checking the headspace. We didn’t have to worry about fitting the gas block and sight block, or drilling/reaming the barrel pinhole. ![]() We used specialized AK gunsmithing tools from AK Builder, Toth Tools, and Robert Forbus Engineering Works in addition to a standing hydraulic press as well as some common tools, such as a drill press, rubber mallet, Dremel, and files. Unless you’re as lucky as we are, you’re not going to be able to pillage your buddy’s shop for riveting tools and alignment fixtures. You get a single shot at installing one, and the tools to work with them aren’t common, either. These rules are also posted every time you submit a link or self post so don't say you didn't see them.The rivets in the recessed area of the AKM’s front trunnion are best reached with the Toth Tool and Engineering Rivet Jaws. Don't like it, get over it and go somewhere else. We have to follow ATF laws and those are too muddy for a place like Reddit. ![]() No AKs with buffer tubes to meet the 26 inch OAL length. The /u/CarlWinslo9 rule - No firearms are to be posted if they are in the grey area of the law.Comments attempting to disparage the OP and suggesting otherwise will be removed as spam/off-topic discussion This subreddit assumes all firearms posted are legal to own.When in doubt, buy wait for a cheap WASR or an M10, or an RH-10 or a WBP Fox or a ZPAP M70.If you do not do this then you will have the ban hammer come down upon thee. If you are a business, or someone representing a business, then you need to notify the mods to prove you are who you say you are.TEMP BAN IMMEDIATELY first offense, second is Permanent. Don't spam OR post memes or post Airsoft.Not everyone is an expert such as yourself be considerate.If you do not read them and get banned then its not anyone's fault but your own. It would have looked like the AK-47 though." I could have developed a new train, had I stayed in the railway. "I wanted to invent an engine that could run for ever.
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