I'm building an ar, I like magpuls acs-l stock. When a retailer, gunsmith, or tactical rifle company produces AR-15 parts, they almost always make those parts in a "mil-spec" configuration. Because the bottom line is that regardless of why you built your new baby it should always be up to the task of taking a beating. That means you can get away with any BCG, buffer, and spring that suits your rifle or pistol configuration. The threads is the same? Check out this picture and look at the differences in tubes. That's a question and a statement often made by so many black rifle builders and shooters. Required fields are marked *. Commercial vs mil-spec. Commercial stocks tend to be slanted at the attachment point where mil-spec stocks will be straight. Page 1 of 2 1 2 Next > Jan 30, 2013 #1. You can't fit a mil-spec buttstock to a commercial buffer tube, and vice versa. To put it simply, mil-spec buffer tubes are more expensive to produce. Thanks…. A 7073 tube will cost more than a 6063 tube. Messages: 11,526 Likes Received: 80. Mil Spec vs. Commercial AR 15 Buffer Tubes – Which One is Better? Threads, especially on such a thin walled tube. This is a charging handle that is made for standard mil-spec AR-15 only. 805moparkid SS And AFX Worker Bee. If it’s going to be used and potentially abused in the field, go for the heavy duty 7073 tube. I believe it has to do with the rolled threads on the mil-spec RE, compared to the cut threads of the "commercial" tubes. As with so many things – it all comes down to money. However, they are neither well known nor well understood, especially by people who are not in the MilSpec Paracord manufacturing business. You should not force a mil-spec buttstock on a commercial tube. And a mil-spec tube likely won't fit a commercial (6061 T6 billet) lower, either. However, Federal and American Eagle’s XM cartridges are known for their accuracy and dependability in the commercial market, essentially making them the next best thing . Standard Charging Handle – Best AR-15 Charging Handles Standard Charging Handle – MSRP – $15.95. Buy a Mil-spec buffer tube. ). Click here to snag a copy. Even though it costs a little more, there are more options for aftermarket stock upgrades, and many people believe that the part is slightly stronger (again, this lacks the scientific proof we would like to see). With the many new manufacturers in the market today, the old wisdom of flat vs slant, or 4 vs 6 stop doesn't really apply anymore. Most stocks come in both mil-spec and commercial varieties. But as the M4-pattern rifles moved into the civilian ranks, companies realized that they could make the tube cheaper. Because of this machining process, the threads on a commercial buffer tube are cut into the metal. The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. This is one of the most common questions we are asked, and for good reason. people over…. I am building a .458 SOCOM. Before we get into true MIL-SPEC specific parts, let's take a look at the term itself, and it's definition. It has a very nice tube but a plain stock. Brownells Tech Tip: Mil-Spec vs. Commercial Buffer Tubes In this Tech Tip by Brownells, gun tech Steve Ostrem explains the differences between commercial and mil-spec buffer tubes. All Rights Reserved. Commercial only applies to buffer tubes and the stocks that fit commercial buffer tubes. The difference being the wall thickness of the tubes, commercial tubes are a bit thicker walled than mil-spec tubes and the outside diameter of the tubes are different, the mil-spec tube is smaller in diameter than the commercial tubes. Commercial tubes are machined and measure 1.17" (OD) at the buttstock. Also, after a round is fired, the action spring is what pushed the bolt back forward and chambers the next round. More info: We see increasing movement toward this becoming the “standard”, in spite of the fact that it tends to costs more. For as little difference that there is between the two Alloy’s in cost, I would suggest that you always go with the 7075-T6. Big step up from the two lower grades of Gen 2 in performance, getting very close to Generation 3 performance. 7073 is roughly twice the strength of 6063, for that reason it’s marketed as Heavy Duty when choosing buffer tubes. The spring, buffer, and other parts are all interchangeable. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, New Jersey, New York, Rhode Island, and Washington). The radius' are different also, the mil-spec tubes having a smaller tighter radius than the commercial tubes. 01-07-13, 18:13 #2. Mil-spec buffer tubes are forged and measure 1.14" (OD) at the buttstock. Now that you know what’s going on inside the tube, let’s examine the difference in types. Knowing your parts allows you to make the correct choice. No doubt, the fact that the military favors this standard is a big part of this. More info: The below picture shows the different dimensions of the 2 items. As with so many things – it all comes down to money. By changing the weight of the buffer, you can change the characteristics of how the rifle cycles. Since you have a choice, a mil-spec extension has some advantages, but either would work. Otherwise the difference would be .054″. 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