Some of the anti-rotation trigger pins are made in a different dimension. Some of that comes down to a tolerance issue. There are companies like Geissele who don’t recommend them. Now, there are some companies who make them nitrided so they are harder and you don’t run into the galling issues, but if you don’t make sure the fire control group floats, even on the anti-rotation trigger pins, then you can still run into issues. Those are the main reasons I am not a fan. In summary, it comes down to the amount of wear that is imparted onto those anti-rotation trigger pins, whether or not you lube properly, and whether or not parts are able to maintain the proper function once you put those kinds of pins in. So, as the weapon is being used, the parts can be chewed up, and then those burrs can raise up and cause more consistency issues. Inconsistency when it comes to lock time with the fire control group, or it canĪlso, a lot of the aftermarket anti-walk, anti-rotation kits are made of stainless steel, and stainless steel is softer than most of the carbon steel pins that are on the market. Speed is what makes that primer ignite consistently, which creates a consistent burn, which means more consistency in the cartridge as it does its thing, sending that round down the barrel.Īnything that you do to lock those pins in place can lead to If you do anything to impede the speed of the hammer, you’re not only reducing the reliability of it igniting that primer, you’re reducing the amount of speed that can hit that primer. That’s what controls the lock time on the AR…it’s the speed of the hammer. The ability for the primer to ignite consistently is controlled by it. The hammer does not move at the proper speed?Ĭhad Albrecht – School of the American Rifle – You can run into light strikes. Might be new to this, can you explain what sort of issues you encounter when Q: So, let’s say you have anti-rotation trigger pins installed…What is the issue with having it fixed?Ĭhad Albrecht – School of the American Rifle – The issue is if there is not proper, sufficient lubrication on that pin that is now fixed in place, you are slowing down the ability of the hammer to move at the proper speed. So, if you install anti-rotation trigger pins, what you are doing is altering something that was designed to float and maintain a certain speed for the hammer, which you have now fixed into position. When it resets, it goes about a quarter rotation in the opposite direction depending on how much it grabs onto the pin. The hammer pin, because of how it interacts with the J-spring, does a small one quarter-rotation every time you fire the weapon. However, if you are dealing with a factory style fire control group that uses standard pins with the groves in them, when the trigger is pulled, the trigger pin does not rotate much, however you can see it. Because they don’t have a retention system to hold pins in place, they have to resort to those type of pins. Can you explain why that is?Ĭhad Albrecht – School of the American Rifle – There are some fire control packs, like some of the drop-in or cassette designs, that require those types of pins. Q: I know from following you that you are not a fan of anti-rotation trigger pins. Let’s start with the basics…Can you walk our readers through what they need to consider when installing a trigger properly?Ĭhad Albrecht – School of the American Rifle – To start with the basics and keep things simple, if readers do not have the money or the time to do the things that I do, I try to explain to people that the most important part about AR-15 trigger installation, or an AR fire control group installation is making sure the parts interface correctly. Q: Chad, we get a lot of questions about AR-15 trigger installation, and almost as many about anti-rotation trigger pins. AR-15 Feed Ramp Problems – School of the American Rifle.Headspace Gauge & the AR – School of the American Rifle.AR-15 Gas System Issues – School of the American Rifle.Common AR-15 Myths – School of the American Rifle.Master Build Class Overview & Upgrading AR Springs.You can find that post here.Īs always, to learn more about Chad and his School of the American rifle, please be sure to check out our first feature interview with him…or other, more recent articles which you can find below: In addition to this article, please be aware that Chad has blogged about this topic on his website. To learn more about anti-rotation trigger pins and for some basic advice on AR-15 triggers, we reached out to Chad Albrecht at School of the American Rifle.
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