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Posted: 2/27/2009 6:57:46 AM EDT
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hello guys I have a new lower from Denny's guns it is very nice and the workmanship in great, but I have noticed that I have a lot of play in my selector switch, I have switched the selector switch out for one on my Armalite and its tight in the Armalite and the Armal;ite is loose in the Denny's lower. It appears the selector switch hole is a tad larger in my Denny's lower. every thing works just fine, is there any way to make it tighter? its just one of those things that bug me, but I may have to live with it.
all the best Ken |
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Take your grip off the lower and remove the safety, detent and spring.
Play with the safety and detent to see how the contact is between the two peices. You may need to find a detent that fits corrctly with the safety, or modify the detent to do this. My RR had a lose selector, and it took a minor machine job on the detent to tighten it up. |
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no you cant punch it out, it works, but the switch just "jiggles", I tried a different spring and dent and it took most of the looseness out of the switch while it is on the safe mode, but its still loose on fire like I said it works fine it just bugs me that is is loose
thanks for all the help guys Ken |
| FYI, I just checked out my son's build and it is identical to my MEGA build in "SAFE" and "FIRE", hammer back or not. I used RRA LPKs in both. The MEGA LPK came from Legal Transfers, and Dennys LPK from PK. No probs. here. I believe it is from the first batch of forged lowers. The Mega build has an Ergo ambi and the Dennys build is USGI RRA. |
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Quoted:
I just wonder if the detent hole could be a little too small?????????? what do you guys think? could that be causing this problem? ken If it jiggles it's got to be the safety selector hole being to large. If you have a micrometer you could measure it against a different receiver to see if the hole is larger? |
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Don't forget the selector detent hole is stepped internally so the detent won't go flying out. If you have a 2nd lower, loosen the pistol grip to free the detent/selector and pull the selector out. Push the pistol grip back on and look how high the detent rides in the opening. Do the same with the lower in question. You will probably need to remove the hammer first to get the selector out.
Just my $.02 |
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I have a forged Dennys lower, and I also have the slightly loose selector. I was using parts from my BM lower. I think the step is not a deep on the Dennys one, so the detent does not fully engage the selector. A slightly longer detent would do the trick, if you could find one. Has not bothered me enough to mess with. I am sure there is some variation in the detents in various LPKs, I need the longer end of spec. Or looking at it the other way, I bet some selectors have their positional stop holes drilled deeper than others. A selector with shallower holes would also do the trick.
Does anyone actually know how far the detent is *supposed* to protrude with the selector removed? That would tell whether its a short detent/shallow step or too deep selector hole. I should check the 23&P see if it says anything–– I doubt it. |
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Quoted:
I think the step is not a deep on the Dennys one, so the detent does not fully engage the selector. This is exactly the problem I had with my two. Simple fix, though, as I just found the proper size drill bit to fit the hole (going from the bottom) and then drilled the step to the proper depth (as measured on 3 other lowers). Problem fixed. 
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Quoted:
Quoted:
I think the step is not a deep on the Dennys one, so the detent does not fully engage the selector. This is exactly the problem I had with my two. Simple fix, though, as I just found the proper size drill bit to fit the hole (going from the bottom) and then drilled the step to the proper depth (as measured on 3 other lowers). Problem fixed.
yes that's the problem. I took my two Denny's lowers to a machine shop, had them deepen the detent ledge and they work perfect now. no complaints what so ever. it cost me $22.50 per lower. it was money well spent. all the best guys thanks for all the input. ken |
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