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Posted: 11/13/2009 6:42:22 PM EDT
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This is the year that I will reward myself with the purchase of my first AR. I'm still enjoying pouring over brands, features, prices, and availability –– including plans for modifications. I have a few basic questions about a few things I noticed. Any enlightenment would be greatly appreciated. I'm sure the answers are already well documented in the forums, but I'm a little light on the lingo, and don't know what to search for.
1. Safe/Fire tabs near selector switch: why are some ground flat on some models, while some are proper little shelves? 2. Why do some AR's have a rod of some kind set at a 45 degree angle just over the trigger? What is that thing? Thanks in advance. Jack |
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This is the year that I will reward myself with the purchase of my first AR. I'm still enjoying pouring over brands, features, prices, and availability –– including plans for modifications. I have a few basic questions about a few things I noticed. Any enlightenment would be greatly appreciated. I'm sure the answers are already well documented in the forums, but I'm a little light on the lingo, and don't know what to search for. 1. Safe/Fire tabs near selector switch: why are some ground flat on some models, while some are proper little shelves? 2. Why do some AR's have a rod of some kind set at a 45 degree angle just over the trigger? What is that thing? Thanks in advance. Jack #1 choice of the mfg its nothing #2 anti-rotation pins (don't need them) |
The "rods" are anti-rotational pins. Someone explained to me what they are for once, but I can't remember. Maybe someone will come along and enlighten us both. Also, Colts seem to have the ground off fire selector tabs, while other brands have the shelves. Why? Colt always does things different, so I'm not surprised haha 
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This is the year that I will reward myself with the purchase of my first AR. I'm still enjoying pouring over brands, features, prices, and availability –– including plans for modifications. I have a few basic questions about a few things I noticed. Any enlightenment would be greatly appreciated. I'm sure the answers are already well documented in the forums, but I'm a little light on the lingo, and don't know what to search for. 1. Safe/Fire tabs near selector switch: why are some ground flat on some models, while some are proper little shelves? 2. Why do some AR's have a rod of some kind set at a 45 degree angle just over the trigger? What is that thing? Thanks in advance. Jack #1 choice of the mfg its nothing #2 anti-rotation pins (don't need them) What are they for cckw? |
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The anti-rotate pins keep the hammer and trigger pins from spinning. The theory is that if the pins don't spin they will not grind on the pin holes.
The selector stops are a feature to keep the selector from spinning too far. Some have them on opposing sides of the selector hole (safe/semi/auto) and some have them 90 degrees apart (safe/semi) to inferfere with FA conversions, sort of like Colt sear blocks.. Others don't have them at all because they are completely unneeded. |
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The anti-rotate pins keep the hammer and trigger pins from spinning. The theory is that if the pins don't spin they will not grind on the pin holes. The selector stops are a feature to keep the selector from spinning too far. Some have them on opposing sides of the selector hole (safe/semi/auto) and some have them 90 degrees apart (safe/semi) to inferfere with FA conversions, sort of like Colt sear blocks.. Others don't have them at all because they are completely unneeded. This. |
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The anti-rotate pins keep the hammer and trigger pins from spinning. The theory is that if the pins don't spin they will not grind on the pin holes. The selector stops are a feature to keep the selector from spinning too far. Some have them on opposing sides of the selector hole (safe/semi/auto) and some have them 90 degrees apart (safe/semi) to inferfere with FA conversions, sort of like Colt sear blocks.. Others don't have them at all because they are completely unneeded. This. Yup. The safety detent riding in the selector groove is what keeps the selector from turning too far. As for the pins, some say they have utility in expensive full-auto lowers, and besides, if you've got $12k invested in your registered receiver, what's another $100 or so to make sure that spinning pins won't egg out the holes? Other folks think they look cool. Me? If they make you happy then why not? |
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The anti-rotate pins keep the hammer and trigger pins from spinning. The theory is that if the pins don't spin they will not grind on the pin holes. The selector stops are a feature to keep the selector from spinning too far. Some have them on opposing sides of the selector hole (safe/semi/auto) and some have them 90 degrees apart (safe/semi) to inferfere with FA conversions, sort of like Colt sear blocks.. Others don't have them at all because they are completely unneeded. This. Yup. The safety detent riding in the selector groove is what keeps the selector from turning too far. As for the pins, some say they have utility in expensive full-auto lowers, and besides, if you've got $12k invested in your registered receiver, what's another $100$30 or so to make sure that spinning pins won't egg out the holes? Other folks think they look cool. Me? If they make you happy then why not? Fixed it. Also In blowback guns like 9mm the hammer pins are prone to breaking, and the anti-rotation pins avert that. |
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