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Posted: 7/5/2009 12:42:22 PM EDT
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Ok I just got done building my first lower. It's a LAR Grizzly lower with a DPMS parts kit. Everything went fine and I was actually very surprised with just how easy it was to build. One problem though I wanted to pass through here due to the wealth of knowledge before I started tinkering myself. My trigger reset is very stiff. When I pull the trigger then pull back the hammer while holding the trigger it resets really tough, much more then my current Bushmaster. When I put the disconnector spring in the disconnector it seemed "catchy", or "sticky" against the metal in it's slot, like there's not enough clearance. The reset sometimes doesn't reset without pushing the trigger forward with your finger then it will click sharply. It does seem to get a bit better the more I do it though.
Is this just new wear in stuff or should I hollow out the slot in the disconnector a tiny bit to let it move more freely? P.S. Anyone know of uppers that fit the Grizzly lowers really well? I know the upper off my Bushmaster lines up without hardly any gaps and feels great. |
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Quoted:
Ok I just got done building my first lower. It's a LAR Grizzly lower with a DPMS parts kit. Everything went fine and I was actually very surprised with just how easy it was to build. One problem though I wanted to pass through here due to the wealth of knowledge before I started tinkering myself. My trigger reset is very stiff. When I pull the trigger then pull back the hammer while holding the trigger it resets really tough, much more then my current Bushmaster. When I put the disconnector spring in the disconnector it seemed "catchy", or "sticky" against the metal in it's slot, like there's not enough clearance. The reset sometimes doesn't reset without pushing the trigger forward with your finger then it will click sharply. It does seem to get a bit better the more I do it though. Is this just new wear in stuff or should I hollow out the slot in the disconnector a tiny bit to let it move more freely? P.S. Anyone know of uppers that fit the Grizzly lowers really well? I know the upper off my Bushmaster lines up without hardly any gaps and feels great. My Stag upper fit my Grizzly lower real nice and tight. |
| I just finished putting a LPK in and one of the things I noticed that was not well explained in the manuals was that the tapered disconnector spring goes into the trigger with the large end down. If the large end is left up, it will cause the disconnector to make a noise and feel scratchy. It is actually scratching on the sides of the trigger. This sounds similar to what you are experiencing. Good Luck! |
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The parts will break-in and smooth out with a little bit of shooting, BUT they should operate properly and be fairly smooth assembled brand new and usused. Its hard to tell in subjective and relative terms that you're forced to use to describe it; basically, a minor difference between the brand new parts and your broken in other AR is fine, a BIG difference might indicate something NOT right.
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...The reset sometimes doesn't reset without pushing the trigger forward with your finger then it will click sharply.... This concerns me, proper functioning triggers will NOT do this, don't know if its criteria for failing the function check, I would "think" it was, personally, I would fail it on the function check. Quoted:
I just finished putting a LPK in and one of the things I noticed that was not well explained in the manuals was that the tapered disconnector spring goes into the trigger with the large end down. If the large end is left up, it will cause the disconnector to make a noise and feel scratchy. It is actually scratching on the sides of the trigger. This sounds similar to what you are experiencing. Good Luck! I agree, at least this is a possibility to consider. One of the most common mistakes assembling the LPK into the lower, is putting in the disconnector spring upside down, or mixing it up with another spring, that will cause it NOT to function properly. I would check again and make sure the disconnector spring and other parts are all assembled correctly. The disconnector spring is suppose to go in with the large end down, into the slot in the trigger, it an interference fit to hold the spring in tight in the trigger, that why you have to force it into the trigger. |
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