Question for the Engineers!!! Luger receivers!!!

Ron Wood · 02-10-2002, 12:45 AM

I am doubtful that aluminum would hold up for a Luger receiver. In full recoil, the inertia of the receiver assembly is arrested by the recoil lug on the bottom of the receiver. However, the toggle assembly is moving independenly of the receiver. When the toggle is in full recoil, the rear-most portion of the toggle strikes the frame just above the lanyard staple, arresting the rearward movement of the breech block and toggle assembly. At that point, aside from the inertia that is taken up by the main spring, a lot of the force of the recoil is absorbed by that rear part of the toggle and the axis pin holding the toggle to the receiver. If you look at the rear toggle link as a lever and the axis pin as a fulcrum, you can see that a lot of force is placed on the pin in line with the direction and force of the recoil. I would imagine that it would not take long for the pin to stretch the soft aluminum, elongating the axis pin hole in the receiver and eventually leading to fracture of the receiver at that point. Just a guess, but I wouldn't want to be the shooter.

02-10-2002, 12:45 AM	#5
Ron Wood Moderator 2010 LugerForum Patron Join Date: Jun 2002 Location: Santa Teresa New Mexico just outside of the West Texas town of El Paso Posts: 7,040 Thanks: 1,106 Thanked 5,254 Times in 1,723 Posts	Re: Question for the Engineers!!! Luger receivers!!! I am doubtful that aluminum would hold up for a Luger receiver. In full recoil, the inertia of the receiver assembly is arrested by the recoil lug on the bottom of the receiver. However, the toggle assembly is moving independenly of the receiver. When the toggle is in full recoil, the rear-most portion of the toggle strikes the frame just above the lanyard staple, arresting the rearward movement of the breech block and toggle assembly. At that point, aside from the inertia that is taken up by the main spring, a lot of the force of the recoil is absorbed by that rear part of the toggle and the axis pin holding the toggle to the receiver. If you look at the rear toggle link as a lever and the axis pin as a fulcrum, you can see that a lot of force is placed on the pin in line with the direction and force of the recoil. I would imagine that it would not take long for the pin to stretch the soft aluminum, elongating the axis pin hole in the receiver and eventually leading to fracture of the receiver at that point. Just a guess, but I wouldn't want to be the shooter.