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Posted: 9/18/2016 1:19:21 PM EDT
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This is a small issue that's driving me mad. I have an 80% lower that's perfect except it doesn't point fully at SAFE. It does function check fine. Have any of you played with the detent to fix this problem? There is an adjustable ambi selector here but I don't want to spend $60 on a $50 receiver.
http://www.brownells.com/rifle-parts/safety-parts/safeties/adjustable-reversible-selector-sku452000043-26528-51650.aspx?cm_mmc=cse-_-Itwine-_-shopzilla-_-452-000-043&utm_medium=cse&utm_source=connexity&utm_campaign=itwine&utm_content=452-000-043&gdffi=08de76408978434b83b40ee6631fc110&gdfms=0540BC2E74DD42F6AC7BBDEE5A0A4F95 |
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http://www.brownells.com/rifle-parts/safety-parts/safeties/adjustable-reversible-selector-sku452000043-26528-51650.aspx?cm_mmc=cse-_-Itwine-_-shopzilla-_-452-000-043&utm_medium=cse&utm_source=connexity&utm_campaign=itwine&utm_content=452-000-043&gdffi=08de76408978434b83b40ee6631fc110&gdfms=0540BC2E74DD42F6AC7BBDEE5A0A4F95
This selector is not going to solve your problem. The selector handles are not adjustable in terms of "clocking" on the main body of the selector. Your problem is the result of an improperly drilled selector hole in the 80 % lower receiver. It is slightly mislocated with respect to the predrilled vertical detent hole. You are just going to have to live with it. Plugging and redrilling the detent hole will most likely not go well. |
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Quoted:
This is a small issue that's driving me mad. I have an 80% lower that's perfect except it doesn't point fully at SAFE. It does function check fine. Have any of you played with the detent to fix this problem? There is an adjustable ambi selector here but I don't want to spend $60 on a $50 receiver. http://www.brownells.com/rifle-parts/safety-parts/safeties/adjustable-reversible-selector-sku452000043-26528-51650.aspx?cm_mmc=cse-_-Itwine-_-shopzilla-_-452-000-043&utm_medium=cse&utm_source=connexity&utm_campaign=itwine&utm_content=452-000-043&gdffi=08de76408978434b83b40ee6631fc110&gdfms=0540BC2E74DD42F6AC7BBDEE5A0A4F95 You drilled the hole for the safety in the wrong place.... |
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I bought 5 lowers. 1 clocks perfectly and 3 don't. I haven't finished the last one yet. The link I posted says that you can clock in any position, still I'd like to hear from end users. Don't see that in the ad. You can see that the two lever are engaged in precut slots. Only adjustment is the set screw in the drum for trigger travel before being stopped by the drum/set screw. |
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where did you get the lower? my modulus lower seem's fine.... but maybe that's why they don't have the safe and fire marking's. Got mine from 80%. Modulus jig. This is what it looks like when on SAFE. See how it's not up against the stop? If I wasn't so anal it wouldn't bother me.  how to take screenshots
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| Have you installed the FCG in the pocket to see how everything lines up? It almost looks like the selector is pushed to far in and is stopping on the bottom of the safety selector stop. Is the safety selector post even on the other side of the lower or is it protruding a small amount? |
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Have you installed the FCG in the pocket to see how everything lines up? It almost looks like the selector is pushed to far in and is stopping on the bottom of the safety selector stop. Is the safety selector post even on the other side of the lower or is it protruding a small amount? I just dropped the selector in an empty receiver to give you an idea as to what I have. I'll probably just accept it as is. I just like everything to be perfect! |
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I just dropped the selector in an empty receiver to give you an idea as to what I have. I'll probably just accept it as is. I just like everything to be perfect! Quoted:
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Have you installed the FCG in the pocket to see how everything lines up? It almost looks like the selector is pushed to far in and is stopping on the bottom of the safety selector stop. Is the safety selector post even on the other side of the lower or is it protruding a small amount? I just dropped the selector in an empty receiver to give you an idea as to what I have. I'll probably just accept it as is. I just like everything to be perfect! Your machining and measurement skills need to be perfect to avoid this condition on 80% lowers. |
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What jig did you use on this lower, did you use a drill press, mill, router, did you drill the safety selector hole all the way through the receiver in one operation, or did you turn it over and drill side independently?
If that selector hole is actually off, I am wondering if your pin holes are off by the same amount. When doing my lowers I drill all of my holes 1/4 inch deep before I start the milling process and when I do them, I do one side, turn it over and do the other side, that way I don't have to worry about deflection, even using a hand drill at slow speed you can drill each side 1/4 of an inch with out worries, and then mill the FCG pocket out. That said, I am still going to say, completely assemble the lower with the safety detent, trigger group and hammer to see how everything lines up, cause I swear it looks like that selector is to deep, and you have to have the rest of those components in place for everything to line up. |
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What jig did you use on this lower, did you use a drill press, mill, router, did you drill the safety selector hole all the way through the receiver in one operation, or did you turn it over and drill side independently? If that selector hole is actually off, I am wondering if your pin holes are off by the same amount. When doing my lowers I drill all of my holes 1/4 inch deep before I start the milling process and when I do them, I do one side, turn it over and do the other side, that way I don't have to worry about deflection, even using a hand drill at slow speed you can drill each side 1/4 of an inch with out worries, and then mill the FCG pocket out. That said, I am still going to say, completely assemble the lower with the safety detent, trigger group and hammer to see how everything lines up, cause I swear it looks like that selector is to deep, and you have to have the rest of those components in place for everything to line up. I used the Modulus HD jig and 80% lowers. I used a router than a drill press for the holes. I drilled one side at a time. I followed the directions exactly. The selector in the picture could be a tad deep, I put it in an empty receiver just to show the position problem Im having. I have 5 differant selectors and they all point in this direction. I milled out 5 receivers, the selector points correctly in 1, 3 are off and the last one I haven't assembler yet. |
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I used the Modulus HD jig and 80% lowers. I used a router than a drill press for the holes. I drilled one side at a time. I followed the directions exactly. The selector in the picture could be a tad deep, I put it in an empty receiver just to show the position problem Im having. I have 5 differant selectors and they all point in this direction. I milled out 5 receivers, the selector points correctly in 1, 3 are off and the last one I haven't assembler yet. Quoted:
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What jig did you use on this lower, did you use a drill press, mill, router, did you drill the safety selector hole all the way through the receiver in one operation, or did you turn it over and drill side independently? If that selector hole is actually off, I am wondering if your pin holes are off by the same amount. When doing my lowers I drill all of my holes 1/4 inch deep before I start the milling process and when I do them, I do one side, turn it over and do the other side, that way I don't have to worry about deflection, even using a hand drill at slow speed you can drill each side 1/4 of an inch with out worries, and then mill the FCG pocket out. That said, I am still going to say, completely assemble the lower with the safety detent, trigger group and hammer to see how everything lines up, cause I swear it looks like that selector is to deep, and you have to have the rest of those components in place for everything to line up. I used the Modulus HD jig and 80% lowers. I used a router than a drill press for the holes. I drilled one side at a time. I followed the directions exactly. The selector in the picture could be a tad deep, I put it in an empty receiver just to show the position problem Im having. I have 5 differant selectors and they all point in this direction. I milled out 5 receivers, the selector points correctly in 1, 3 are off and the last one I haven't assembler yet. Put it together and then see what you have. |
| Very good Pictures. When the receiver is in the jig their is only one place to drill the safety hole. Assuming the jig is correct, the detent hole is off or possibly the forging is to blame. I'll contact both Modulas and 80% and see what they have to say. I kind of like everything perfect, maybe the 80% stuff isn't for me. I did get 1 perfect one out of 5. |
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Do you have a small drill bit or some type of pin you can stick up through the detent hole to see where it intersects the selector hole? If so, that should tell you real quick if the detent hole is off. If it intersects in the middle of the selector hole, then there is something wrong with the selector itself, if not, then the detent hole is off. If it is the lower, then who ever you bought it from should replace it or them.
80% are so easy to do these days, they are for everybody, but things do happen every once in a while. |
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I'll contact both Modulas and 80% and see what they have to say. As most members here in the BIY section know, I am the tech rep for Modulus. I have already offered my thoughts on this subject back on post #10 in this thread, namely the selector detent hole being off. It seems that a few more folks more have come to the same conclusion since. |
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As most members here in the BIY section know, I am the tech rep for Modulus. I have already offered my thoughts on this subject back on post #10 in this thread, namely the selector detent hole being off. It seems that a few more folks more have come to the same conclusion since. Quoted:
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I'll contact both Modulas and 80% and see what they have to say. As most members here in the BIY section know, I am the tech rep for Modulus. I have already offered my thoughts on this subject back on post #10 in this thread, namely the selector detent hole being off. It seems that a few more folks more have come to the same conclusion since. I had no idea you were connected to modulus. Your input is appreciated. At first I thought it was a bad selector as my first ones were extremely tight and took a great deal of work to even fit in the hole. After I found I known good selector I knew my detent hole was off center. Each receive is different, 1 is acceptable and the others are not (in my opinion). This one is way off. You can see where the detent hole is slightly off center.  pic host
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This one is better. Detent looks centered but is slightly off  gif uploader
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I'd be interested knowing how receivers from other sources have turned out. What about billet? |
Number 5 is complete and of course it's off to. I just sent an email to 80% Lowers to inform them of the situation.
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Grind the point off, Drill a divot on the selector face, Fill with white or red paint, Earn interwebz points, profit!! There are a few ways to make it better. I think if were to grind off the stops completely it would be less noticeable. I'm pretty sure there are some ambidextrous safety selectors that are adjustable but like I said I don't need a $60 safety on a $50 receiver. Bottom line, after buying the jig, 4 mill ends, receivers than spending hours milling, I would have been far better off just buying the receivers from Aero. It was a nice family project though I just wish the results were better. |
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This is a small issue that's driving me mad. I have an 80% lower that's perfect except it doesn't point fully at SAFE. It does function check fine. Have any of you played with the detent to fix this problem? There is an adjustable ambi selector here but I don't want to spend $60 on a $50 receiver. http://www.brownells.com/rifle-parts/safety-parts/safeties/adjustable-reversible-selector-sku452000043-26528-51650.aspx?cm_mmc=cse-_-Itwine-_-shopzilla-_-452-000-043&utm_medium=cse&utm_source=connexity&utm_campaign=itwine&utm_content=452-000-043&gdffi=08de76408978434b83b40ee6631fc110&gdfms=0540BC2E74DD42F6AC7BBDEE5A0A4F95 My interpretation of the description is the adjustable feature will not do what you want. I would contact JPE for the answer. |
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