Luger double fires!!

wglowrey · 06-07-2010, 08:00 PM

Hello all! I recently got my hands on a Mitchell Arms SS p-08. Overall it is a pretty good shooter, but it is very picky with ammo. Every once and a while the gun will fire two rounds when the trigger is pulled instead of one!

Any ideas why this would happen? Thanks!!

lugerholsterrepair · 06-07-2010, 08:03 PM

So you could have fun?

Jerry Burney

wglowrey · 06-07-2010, 08:33 PM

haha. It would be more fun if I could predict when it will double fire

Thor · 06-07-2010, 11:00 PM

I once worked on one that would fire 4 rounds at once, kinda scary. There might be some slippage at the sear bar firing pin contact point. Check both of those parts. Also, if the trigger is releasing at a point when it almost contacts the back of the trigger guard/frame, the vibraton from the toggle cycling could be causing it to kind of "bump fire"

John Sabato · 06-08-2010, 08:32 AM

The trigger linkage in original German made Lugers was all hand-fitted for each pistol. The Stainless guns were made on CNC machines and I doubt the same level of fitting was maintained.

Things to check:

Look at the sear/firing pin engagement surfaces and make sure they are not damaged or galled. Do not remove any metal unless absolutely necessary, but do make sure that the engagement surface is properly smooth and not too shallow. The surface of the sear bar and the firing pin that mate must be perfectly smooth, and perfectly parallel to each other, and of sufficient engagement to prevent double firing.

Check for free movement of the disconnector plunger on the end of the sear bar. The trigger lever presses on this to fire the gun. It should move smoothly in-and-out and not wobble.

Check the Trigger lever to make sure there are no burrs on the mating surfaces that press on the sear.

Make sure you are firing the gun with a firm and not limp-wristed hold. This can definitely affect the firing reliability... and make sure you are not flinching.

Lugerdoc · 06-08-2010, 09:22 AM

W, Check all of the above and consider installing a stronger trigger bar spring. TH

06-07-2010, 08:00 PM	#1
wglowrey User Join Date: Jan 2010 Posts: 11 Thanks: 0 Thanked 0 Times in 0 Posts	Luger double fires!! Hello all! I recently got my hands on a Mitchell Arms SS p-08. Overall it is a pretty good shooter, but it is very picky with ammo. Every once and a while the gun will fire two rounds when the trigger is pulled instead of one! Any ideas why this would happen? Thanks!!

06-07-2010, 08:03 PM	#2
lugerholsterrepair Moderator Lifetime Forum Patron Join Date: Jun 2002 Location: Arizona/Colorado Posts: 7,763 Thanks: 4,866 Thanked 3,105 Times in 1,429 Posts	So you could have fun? Jerry Burney __________________ Jerry Burney 11491 S. Guadalupe Drive Yuma AZ 85367-6182 lugerholsterrepair@earthlink.net 928 342-7583 (CO & AZ) Year Round 719 207-3331 (cell) "For those who Fight For It, Life has a flavor the protected will never know."

06-07-2010, 11:00 PM	#4
Thor User Join Date: Jun 2002 Location: Rio Rancho, New Mexico Posts: 4,583 Thanks: 958 Thanked 970 Times in 276 Posts	I once worked on one that would fire 4 rounds at once, kinda scary. There might be some slippage at the sear bar firing pin contact point. Check both of those parts. Also, if the trigger is releasing at a point when it almost contacts the back of the trigger guard/frame, the vibraton from the toggle cycling could be causing it to kind of "bump fire" __________________ Thor's Luger Clinic http://members.rennlist.com/lugerman/ Ted Green (Thor Yaller Boots) 725 Western Hills Dr SE, Rio Rancho, NM 87124 915-526-8925 Email thor340@aol.com ----------------------------------- John3:3 Jesus answered and said to him, "Most assuredly, I say to you, unless one is born again, he cannot see the kingdom of God."

06-08-2010, 08:32 AM	#5
John Sabato Lifer Lifetime Forum Patron Join Date: Jun 2002 Location: The Capital of the Free World Posts: 10,152 Thanks: 3,003 Thanked 2,304 Times in 1,096 Posts	The trigger linkage in original German made Lugers was all hand-fitted for each pistol. The Stainless guns were made on CNC machines and I doubt the same level of fitting was maintained. Things to check: Look at the sear/firing pin engagement surfaces and make sure they are not damaged or galled. Do not remove any metal unless absolutely necessary, but do make sure that the engagement surface is properly smooth and not too shallow. The surface of the sear bar and the firing pin that mate must be perfectly smooth, and perfectly parallel to each other, and of sufficient engagement to prevent double firing. Check for free movement of the disconnector plunger on the end of the sear bar. The trigger lever presses on this to fire the gun. It should move smoothly in-and-out and not wobble. Check the Trigger lever to make sure there are no burrs on the mating surfaces that press on the sear. Make sure you are firing the gun with a firm and not limp-wristed hold. This can definitely affect the firing reliability... and make sure you are not flinching. __________________ regards, -John S "...We hold these truths to be self-evident that ALL men are created EQUAL *and are endowed by their Creator* with certain UNALIENABLE* rights, and among these are life, LIBERTY, and the pursuit of happiness..."*

06-08-2010, 09:22 AM	#6
Lugerdoc Patron LugerForum Patron Join Date: Jun 2002 Location: POB 398 St.Charles,MO. 63302 Posts: 5,089 Thanks: 6 Thanked 736 Times in 483 Posts	W, Check all of the above and consider installing a stronger trigger bar spring. TH __________________ Tom Heller POB 398 ST.Charles, MO. 63302 Tel 636-447-3006 lugerdoc@charter.net

06-07-2010, 08:33 PM	#3
wglowrey User Join Date: Jan 2010 Posts: 11 Thanks: 0 Thanked 0 Times in 0 Posts	haha. It would be more fun if I could predict when it will double fire