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Posted: 4/21/2007 9:08:10 PM EDT
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I build my first AR on a superior lower with DPMS Lower parts kit and a hogue replacement grip upgrade. i have everything installed however when the grip is screwed in tight it is almost impossible to change the selector from safe to fire... is this a tolerance issue? also, i am having trouble getting the trigger pin that goes through the receiver to lock in via the hammer spring. i tried reversing the direction of it, but it still does not engage the notch into the spring. i have no idea what i can do to rectify either of these problems. any help would be greatly appreciated. |
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I have heard of some people having problems with the safety selector & a Houge grip. The problems I have heard of are, the Houge is a little wider sometimes than a A2 or A1 pistol grip. The fix would be to shave (or Dremel) a little bit off of the Houge where the selector is hanging up. That may or may not be the answer, but your description sounds like it. Myself I have Houge grips on all my ARs & have never run into that issue. I do not know what to tell you of your other delema. |
That is with all of them. You cannot move the selector to the safe position unless the hammer is cocked. Some people have problems with the hogue grip. Check your clearance to see i it is rubbing. If so, just file down a little bit. Also, being new, it's going to be a little stiff. Just make sure you got it lubed up, and keep working it back and forth. As far as the trigger pin, did you follow the "how to guide". That's what I did, and everything went together like a charm. |
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The problem I had with mine was that the spiring pocket in the grip wasn't as deep as the one in my A2 grip. and it added excessive pressure to the selector/safety. I took the correct size drill bit and turned it by hand and deepened the hole til it was the same depth as the A2 grip. This fixed my selector/safety problems. The other thing it could be is that the detent is sticking in the holes on the safety making it difficult to rotate. you can try dulling the detent a bit making its point more rounded. hth, Jason |
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I had a similar problem with a RRA LPK. However, I could go from safe to fire, but not vice versa. The solution involved a couple of minutes with a small file. Check your detent pin for marks/gouges. If it has them, your selector may be hanging where it rolls into the trough from the pit. A file at that junction works wonders. Mine rotates like clockwork now. |
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+1 on the Hogue being wider than the receiver and the selector rubbing on it when moving it into safe (assuming the hammer is cocked as mentioned). Mine had the same problem. I took an exacto knife and traced the path the selector took over the grip. I then swiped down even with the receiver to make it flush where the selector would go over the grip. Works well and if you take your time doesn't look like a hack job either. Looks kinda like the Ergo grip on the same area. |
had the same trigger pin problem on my issued bushmaster A3 after about 2 takedowns it would,nt lock anymore and walk out, tried everything you did and finally fixed problem with a set of anti-walk pins from bushmaster for $6.50. my problem was solved. also my RRA has a hogue on it and is perfect.
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i can see a visible gap petween the rubber grip and the selector switch. it must be something with the spring being too tight or the tip deformed as it has a constant resistance, almost impossible to move from safe to fire, and yes the hammer is back when trying to change from fire to safe. I am going to take one posters advice and take it apart and put back together... maybe use a little more lube this time edit i just put on the standard pistol grip and the selector slides a little easier, however nothing like it should, still has a good ammount of resistance. the selector plunger thing is marred a little, from me forcing it when the hogue was on... |
im 100% positive that it was not deformed when i firts installed it though... would it affect the functioning much if i tried it the first few times w/o oil? |
| Did you set the Superior Arms Trigger screw? If you put it in too far, the selector will not move at all. That's how I determine that it is close to being setup, I screw it in until the selector doesn't move, then I back it out until it does move. Sometimes a tad bit more just to be sure. |
Many, if not all (not sure), have a screw next to the pistol grip screw hole. It is an adjustment screw to take the creep out of a stock trigger. If you remove the pistol grip and see a Hex Head screw in a hole next to the pistol grip hole, then yours has the trigger adjustment screw. If present, back it out a little. I think it is a 1/4" hex, but I am not sure. ETA: Picture of screw: 
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red duck. thank you very much that is my problem, i removed that screw! it was in the hole that my pistol grip would screw into so i just assumed it was there ot make sure that the threads were good. i will try adjusting this screw untill the selector works thanks again i emailed DPMS about getting a replacement trigger pin as the one i have does not catch. |
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alright, i tried putting the hex screw back in, however now the problem is worse. im not sure if the grouve is too deep on the selector is DPMS LRPK1 known for issues with tollerances? edit... upon further function checking my rifle, i noticed that the bolt catch is very hard to disengage after a mag is emptied and a new one inserted. it is all but impossible to get the catch off of the bolt to drive home a new round. the upper is 100% perfect as i have used it on my RRA lower many times in the past. did i get a bad batch of parts? the bolt catch moves freely when the uppe ris disconected and i push it back and forth by hand. |
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