Trigger Mod p11?
1 - 13 of 13 Posts
Joined
·
7,092 Posts
Soooooo ... basically, this "mod" is to over-extend (damage) the hammer spring, thereby weakening it? No, thanks. Totally a recipe for light strikes.
Joined
·
4,827 Posts
Go or it. It's on the 'net and YouTube. It must be true. Or, if you can find the time, look through 10+ years of posts from experienced KelTec owners and gunsmiths here to help with your decision. Welcome to the KTOG forum. Glad to have you. Keep us posted and updated on your modification.
Joined
·
4,827 Posts
Yeah, I guess so. I didn't ask, but I assumed (OH NO!) that he was going to transpose that info and procedure to the P-11. Maybe he can answer that.
Joined
·
5,215 Posts
Yeah... If you do a simple P11 Subforum search for 'Trigger Mod', you'll find Dozens (if not Hundrds) of threads discussing modifying the springs in order to lighten the trigger press.
There's really nothing new that we haven't seen and discussed and Most of our opinions on this haven't changed over the years.
But... It's your pistol. Do whatever you want to it. If it's your SD pistol, thoroughly test it before trusting it (and have replacement springs on hand, so you can put it back to spec when you're done)
There's really nothing new that we haven't seen and discussed and Most of our opinions on this haven't changed over the years.
But... It's your pistol. Do whatever you want to it. If it's your SD pistol, thoroughly test it before trusting it (and have replacement springs on hand, so you can put it back to spec when you're done)
Joined
·
15 Posts
Basically, we need to think about how the original (P-11, P-40, P-32, P3-AT & PF-9) Kel-Tec pistols work.
All are hammer fired.
All use a hammer spring which is an expansion spring rather than the almost universally employed compression spring.
All employ a firing pin which is longer the firing pin channel in which it travels.
All use a very strong firing pin return spring,
None use a firing pin block.
The P-32 , P3-AT & PF-9 employ a hammer block which holds the hammer back from the firing pin.
The P-11 & P-40 do not employ the hammer block. As a result their hammers rest against the firing pin.
All use firing pins which are quite light in weight.
Another semi-auto pistol, the "Makarov", also uses a light weight firing pin, a hammer catch which functions similarly to the Kel-Tec hammer block, a firing pin which is longer than its channel and no firing pin return spring.
Like Kel-Tecs, a check will often reveal a very light firing pin mark on the primer of a chambered cartridge. But there are no reports of slam-fires or drop firing that I know of.
This is because the inertia of cycling the slide or the dropping of the pistol "muzzle down" on a hard surface from a reasonable height will not impart enough energy to a light weight firing pin to give it enough kinetic energy to detonate a primer.
All this would lead me, but maybe not you, to think that the Kel-Tecs with the hammer block (P-32, P3-AT & PF-9) would function safely with much lighter firing pin return spring.
The above three pistols will also function with their firing pins shortened (at the hammer end) to the point where the overall length of the firing pin is just lightly shorter the firing pin channel.
So I have personally concluded (but definitely am not recommending to others, including those on this forum) that the Kel-Tecs with the hammer block will remain safe even if a the firing pin return spring is lightened substantially and the hammer spring is lightened as well, thus providing a lighter trigger pull. The firing pin could also be shortened as described above, though that is probably not really necessary.
http://1bad69.com/keltec/droptestresults.htm
http://1bad69.com/keltec/triggerstop.htm
http://1bad69.com/keltec/trigger.htm
http://1bad69.com/keltec/triggersmoothing.htm
http://1bad69.com/keltec/triggershoe.htm
http://1bad69.com/keltec/pretravel.htm
http://1bad69.com/keltec/triggerpull.htm
http://1bad69.com/keltec/internalstop.htm
http://1bad69.com/keltec/whitestop.htm
http://1bad69.com/keltec/triggershoe_set_screws.htm
http://1bad69.com/keltec/fpspringp-3at.htm
All are hammer fired.
All use a hammer spring which is an expansion spring rather than the almost universally employed compression spring.
All employ a firing pin which is longer the firing pin channel in which it travels.
All use a very strong firing pin return spring,
None use a firing pin block.
The P-32 , P3-AT & PF-9 employ a hammer block which holds the hammer back from the firing pin.
The P-11 & P-40 do not employ the hammer block. As a result their hammers rest against the firing pin.
All use firing pins which are quite light in weight.
Another semi-auto pistol, the "Makarov", also uses a light weight firing pin, a hammer catch which functions similarly to the Kel-Tec hammer block, a firing pin which is longer than its channel and no firing pin return spring.
Like Kel-Tecs, a check will often reveal a very light firing pin mark on the primer of a chambered cartridge. But there are no reports of slam-fires or drop firing that I know of.
This is because the inertia of cycling the slide or the dropping of the pistol "muzzle down" on a hard surface from a reasonable height will not impart enough energy to a light weight firing pin to give it enough kinetic energy to detonate a primer.
All this would lead me, but maybe not you, to think that the Kel-Tecs with the hammer block (P-32, P3-AT & PF-9) would function safely with much lighter firing pin return spring.
The above three pistols will also function with their firing pins shortened (at the hammer end) to the point where the overall length of the firing pin is just lightly shorter the firing pin channel.
So I have personally concluded (but definitely am not recommending to others, including those on this forum) that the Kel-Tecs with the hammer block will remain safe even if a the firing pin return spring is lightened substantially and the hammer spring is lightened as well, thus providing a lighter trigger pull. The firing pin could also be shortened as described above, though that is probably not really necessary.
http://1bad69.com/keltec/droptestresults.htm
http://1bad69.com/keltec/triggerstop.htm
http://1bad69.com/keltec/trigger.htm
http://1bad69.com/keltec/triggersmoothing.htm
http://1bad69.com/keltec/triggershoe.htm
http://1bad69.com/keltec/pretravel.htm
http://1bad69.com/keltec/triggerpull.htm
http://1bad69.com/keltec/internalstop.htm
http://1bad69.com/keltec/whitestop.htm
http://1bad69.com/keltec/triggershoe_set_screws.htm
http://1bad69.com/keltec/fpspringp-3at.htm
You sure about that?
Joined
·
4,827 Posts
Well, I should hope so. Going to a 15 round 28 oz $1,300 pistol should be somewhat of an upgrade.
Joined
·
4,827 Posts
A new Sphinx for under $700?
1 - 13 of 13 Posts
Join the discussion
