Hi folks. I'm hoping that there is a simple answer that I've simply been unable to find, despite some pretty diligent searching.
I've got a 1982 Ruger MKII that my brother got me for Christmas just after my ETS from active duty, and over the years its already bad trigger had gotten more and more sloppy. Fast forward about five years to when I was a young LT back on active duty, and I decided to clean it up, and wound up taking one stroke too many off the hammer with a file. The result was a gun that would fire once, and more often than not a 2nd, 3rd, sometimes even emptying the mag. It was unsafe, there was no internet, gunshows and shops weren't carrying spare hammers, so it went into an ammo can for 20+ years.
A couple weeks ago I got a Volquartsen MKII accuracy kit that's comprised of a trigger, bolt release, sear, hammer, hammer bushing and related springs. Nice gear.
Takedown and installation was no problem. Installation of the new parts was not a problem. but getting the damn thing to operate correctly has been "100% failure" to date.
Best I can judge, the problem centers on the Disconnector, which is original equipment to the gun... it wasn't a part of the kit.
With the barrel and bolt off, and the receiver completely assembled, all function checks are perfect. By lifting slightly on the hammer to provide positive sear engagement, pulling the trigger causes the disconnector to slide forward, tripping the sear and giving a really smooth and nice break, allowing the hammer to fall. Sweet.
But, (and this is the part I don't understand and haven't been able to reference anywhere) if the top of the disconnector is pushed down slightly, there is a click, and the sear is no longer engaged; pull the trigger and the disconnector moves, but it doesn't cause the sear to rotate forward, so there's no joy on the hammer interaction at all. To correct the condition if the rear of the hammer is depressed very slightly, the disconnector is popped upward a tiny bit, and again engages the sear.
This is obviously by design, as the hole in the disconnector which engages the hammer bushing would be round if Ruger didn't WANT the disconnector moving north and south. But it's irritating that I can't reference this anywhere.
On reassembly, even when taking ridiculous caution that the hammer is fully forward when inserting the mainspring housing, and that the hammer spur isn't captured behind the sear spring retaining pin. I'm getting positive pressure from the spur being placed under mainspring pressure on the last 1/4" of closing the mainspring housing into the receiver before flipping up the catch. But the problem is that no matter how I do this, when the piece is cocked, that disconnector is apparently being depressed, disengaging sear action, and not allowing it to fire.
Disassembly at this point is a Rosie O'Donnell... you've gotta beat the muzzle on a safe hard surface to get the hammer to go forward, allowing the mainspring housing to be taken out.
So, who's a guru? I've not yet been able to crack this issue, and I'm nearing the limits of my patience.
http://www.youtube.com/watch?v=uusP-vyfNlQ&feature=share&list=UUOBn3JVKcMEHO_xBqbgyhmg... hope this short video of the problem helps.
I've got a 1982 Ruger MKII that my brother got me for Christmas just after my ETS from active duty, and over the years its already bad trigger had gotten more and more sloppy. Fast forward about five years to when I was a young LT back on active duty, and I decided to clean it up, and wound up taking one stroke too many off the hammer with a file. The result was a gun that would fire once, and more often than not a 2nd, 3rd, sometimes even emptying the mag. It was unsafe, there was no internet, gunshows and shops weren't carrying spare hammers, so it went into an ammo can for 20+ years.
A couple weeks ago I got a Volquartsen MKII accuracy kit that's comprised of a trigger, bolt release, sear, hammer, hammer bushing and related springs. Nice gear.
Takedown and installation was no problem. Installation of the new parts was not a problem. but getting the damn thing to operate correctly has been "100% failure" to date.
Best I can judge, the problem centers on the Disconnector, which is original equipment to the gun... it wasn't a part of the kit.
With the barrel and bolt off, and the receiver completely assembled, all function checks are perfect. By lifting slightly on the hammer to provide positive sear engagement, pulling the trigger causes the disconnector to slide forward, tripping the sear and giving a really smooth and nice break, allowing the hammer to fall. Sweet.
But, (and this is the part I don't understand and haven't been able to reference anywhere) if the top of the disconnector is pushed down slightly, there is a click, and the sear is no longer engaged; pull the trigger and the disconnector moves, but it doesn't cause the sear to rotate forward, so there's no joy on the hammer interaction at all. To correct the condition if the rear of the hammer is depressed very slightly, the disconnector is popped upward a tiny bit, and again engages the sear.
This is obviously by design, as the hole in the disconnector which engages the hammer bushing would be round if Ruger didn't WANT the disconnector moving north and south. But it's irritating that I can't reference this anywhere.
On reassembly, even when taking ridiculous caution that the hammer is fully forward when inserting the mainspring housing, and that the hammer spur isn't captured behind the sear spring retaining pin. I'm getting positive pressure from the spur being placed under mainspring pressure on the last 1/4" of closing the mainspring housing into the receiver before flipping up the catch. But the problem is that no matter how I do this, when the piece is cocked, that disconnector is apparently being depressed, disengaging sear action, and not allowing it to fire.
Disassembly at this point is a Rosie O'Donnell... you've gotta beat the muzzle on a safe hard surface to get the hammer to go forward, allowing the mainspring housing to be taken out.
So, who's a guru? I've not yet been able to crack this issue, and I'm nearing the limits of my patience.
http://www.youtube.com/watch?v=uusP-vyfNlQ&feature=share&list=UUOBn3JVKcMEHO_xBqbgyhmg... hope this short video of the problem helps.