06-13-2014, 02:44 AM
I am sorry to say that there is an issue with the Dry Fire Device. There has been one customer who could not get the device to lock into two different lowers.
The slot in the device for the mag catch is too short. With a certain combination of tolerance stack up, the mag catch on the lower will not properly seat into the slot on the device.
I discovered that I messed up the slot location. Pmags have a longer slot that GI mags, because the Pmags have larger radii in the corners.
I mixed measurements from the two mags and started my mid length slot, too close to the back of the mag well. Technically my slot isn't too short, it just needs to be moved toward the muzzle by 0.075"
It fit in every lower I tried, so I didn't notice the mistake.
Three options.
1. If yours works and you are happy with it, continue to enjoy it.
2. I can send you a new and fixed device with money to return your defective one, whether you have an issue or not.
3. You can lengthen the slot toward the muzzle end with a dremel tool. 0.075" should be more than enough.
It should still hold well even if you mangle that end of the slot a little. The rest of the slot will hold it. I will have to work out a quick way to fix the remaining devices with my machinist.
It is easier if you send any correspondence to my email address, but you can PM me if you prefer that method. Please include your name and forum handle. It helps me keep things straight.
I have received a few orders today. I will hold onto those until I can get my stock devices corrected.
David Sims
dmsims21@gmail.com
830 Alley Dr.
Friendsville, TN 37737
The slot in the device for the mag catch is too short. With a certain combination of tolerance stack up, the mag catch on the lower will not properly seat into the slot on the device.
I discovered that I messed up the slot location. Pmags have a longer slot that GI mags, because the Pmags have larger radii in the corners.
I mixed measurements from the two mags and started my mid length slot, too close to the back of the mag well. Technically my slot isn't too short, it just needs to be moved toward the muzzle by 0.075"
It fit in every lower I tried, so I didn't notice the mistake.
Three options.
1. If yours works and you are happy with it, continue to enjoy it.
2. I can send you a new and fixed device with money to return your defective one, whether you have an issue or not.
3. You can lengthen the slot toward the muzzle end with a dremel tool. 0.075" should be more than enough.
It should still hold well even if you mangle that end of the slot a little. The rest of the slot will hold it. I will have to work out a quick way to fix the remaining devices with my machinist.
It is easier if you send any correspondence to my email address, but you can PM me if you prefer that method. Please include your name and forum handle. It helps me keep things straight.
I have received a few orders today. I will hold onto those until I can get my stock devices corrected.
David Sims
dmsims21@gmail.com
830 Alley Dr.
Friendsville, TN 37737