Blue68f100
Member
A friend of mine has a LB Stinger (SS) that the slide is very very hard to move when in battery. He has 2000 rounds through it now and it's still as tight as it was when new. I put the nose on a set of bathroom scales with a hole for the barrel to go through and started pushing. It took an average of 30 lbs before the slide moved and this is without the RS installed. I know this is probably not right so I started looking for the cause. I pushed the slide forward till resistance was felt this is where it stopped, 1/16" short. Even allowing the RS to drive it forward from 1/2" back it will not drive the slide all the forward, lacks about 1/64"-1/32". The bushing to barrel moves with just a tad of resistance and shows no indication of bind.
I had painted the slide stop pin and the bottom of the barrel lug/feet with a marker looking for contact. This is what I found, sorry for the out of focus on the slide stop pin. But it still show the contact. The contact area has been wore flat and is 0.003" below the pin's dia. OD of 0.199" . If I install a new EGW slide stop which has a OD of 0.200" the load required to move the slide jumps up to 50 lbs. with no RS.
The contact on the bottom of the barrel lug/feet.
The best I can measure the link is some where around 0.285" which seams odd but I do not have a accurate way to measure it. But would explain for the short slide lugs and binding.
The pin is almost too tight to move/rotate when the slide is fully forward. This got me to wondering what was making this overly tight. So I dug out my plastic gauge out and laid it on the #1 lug (first lug to slide) and moved the slide fully forward to get a reading. What I found surprised me. The plastic gauge only went to 0.002" and it was 2 times that (flatten) so my guess is metal to metal contact. I then used my calipers to measure the depth of the lug slot in the slide it measure 0.045" at the front of the lug (closes to breach). I measured the Colt Commander I have and it measures 0.065" . Looking at the LB it looks like it was sanded down. I though I read some where 0.050" is the bare min. The lug is starting to show signs of rounding off, not good. I was unable to get a photo to show this, but the edge is no longer sharp like the others.
LB next to the Colt.
Looking for some guidance here. This gun is only 5 mo old (2k rounds) but it should not be having these kind of problem on $2k gun.
All feed back is welcome. Just trying to figure out what to recommend to him. If it was mine it would be going back for the fact the lug engagement is below the 0.050" min if this is a good number.
For got to say this is a 45acp...
I had painted the slide stop pin and the bottom of the barrel lug/feet with a marker looking for contact. This is what I found, sorry for the out of focus on the slide stop pin. But it still show the contact. The contact area has been wore flat and is 0.003" below the pin's dia. OD of 0.199" . If I install a new EGW slide stop which has a OD of 0.200" the load required to move the slide jumps up to 50 lbs. with no RS.
The contact on the bottom of the barrel lug/feet.
The best I can measure the link is some where around 0.285" which seams odd but I do not have a accurate way to measure it. But would explain for the short slide lugs and binding.
The pin is almost too tight to move/rotate when the slide is fully forward. This got me to wondering what was making this overly tight. So I dug out my plastic gauge out and laid it on the #1 lug (first lug to slide) and moved the slide fully forward to get a reading. What I found surprised me. The plastic gauge only went to 0.002" and it was 2 times that (flatten) so my guess is metal to metal contact. I then used my calipers to measure the depth of the lug slot in the slide it measure 0.045" at the front of the lug (closes to breach). I measured the Colt Commander I have and it measures 0.065" . Looking at the LB it looks like it was sanded down. I though I read some where 0.050" is the bare min. The lug is starting to show signs of rounding off, not good. I was unable to get a photo to show this, but the edge is no longer sharp like the others.
LB next to the Colt.
Looking for some guidance here. This gun is only 5 mo old (2k rounds) but it should not be having these kind of problem on $2k gun.
All feed back is welcome. Just trying to figure out what to recommend to him. If it was mine it would be going back for the fact the lug engagement is below the 0.050" min if this is a good number.
For got to say this is a 45acp...
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