This places undue stress on the extractor, can cause damage to the cartridge case head, can tear the cases when extracting them from the chamber, and it has the possibility to affect overall accuracy due to damaged cartridge components during chambering and inconsistent bolt lock up. Whatever you do, do not run a combination of the extra power spring, insert, and o-ring! If extractor tension gets too high, it typically doesn’t hurt extraction, but it hammers the case head as the round is chambered. On an AR-15, an extra-power spring such as the 5 coil extractor springs that Springco makes, or effectively increasing spring pressure through adding a “booster” insert and o-ring, will help prevent the extractor from slipping off and out of the case rim groove. More on the latter here soon.īut first, let’s address extractor tension as this is the most common culprit. In an extreme case, the case stays in the chamber and there’s a chunk missing from its rim or there is a hole in the side of the case! These concerns could be caused by extractor tension concerns or they could be caused by other issues such as chamber concerns or over gassing which creates an overly-quick functioning on the AR during its cycle of operation. Or, perhaps, the case reluctantly released but the extra drag slowed the carrier progress to the point it didn’t make a strong enough run to complete the cycle and the case didn’t eject. What’s happened there is that the extractor lost its grip on the rim. One symptom of faulty extraction is that the gun fires and the bolt comes back, and the case is still in the chamber. You can see the marks where the extractor slipped off during extraction. Its job is to pull a fired case out of the chamber. The extractor is essentially a spring-loaded claw that snaps over and into the rim of the cartridge case. If spent cases are not being successfully expelled, the first step is to figure out which piece is at fault. Granted a grueling and hard life dependent upon a number of circumstances with the AR that they reside in. So, what is the basic job of the extractor and ejector? The extractor and ejector team up to get a spent case out of an AR-15. This article is a combination of generic set-up and troubleshooting topics, and the general idea is that if the set-up is done right there’s no troubles to be had. But they will make or break the operation of your AR. There is nothing “sexy” about these two components either. There is no cool factor about the extractor or ejector. Why? Because these two components can be problematic, especially with particular AR-15 platforms, and I believe that they need to have a little more space dedicated to them. In that article I discussed all but two of the major components.
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