Smith & Wesson Forum

Go Back   Smith & Wesson Forum > >


Reply
 
Thread Tools Display Modes
  #1  
Old 08-06-2018, 06:02 PM
demkofour's Avatar
demkofour demkofour is offline
SWCA Member
6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety  
Join Date: Apr 2006
Location: LI, NY
Posts: 230
Likes: 514
Liked 247 Times in 69 Posts
Default 6904 Binding Ambi Safety

Hey guys- I recently picked up an as new 6904 here on the Forum. As a southpaw, I activate the Safety/Decocker from the right side and noticed it was binding. But only when I activate from the right side- not from the traditional left side (as in what a right handed shooter would do...)

I took a quick close look and I see that the binding is caused by the inside edge of the r/s lever contacting the pistol frame below the lever and about 1/4" above and behind the red dot (see the attached photo).
I also can see and feel a slight amount of lateral movement with the levers from left to right and right to left. When trying to activate the Safety/Decocker with my left thumb, that causes the lever to slightly move inward, causing contact with the frame.

I'm thinking of removing the r/s lever and sanding/polishing down the inside edge a bit, but...
Does anyone have a better viable solution and/or suggestions (other than switching to right handed shooting and safety/Decocker activation LOL)?
Attached Thumbnails
6904 Binding Ambi Safety-fullsizeoutput_71f7-jpg  
__________________
Stay Safe...
jd SWCA #3276

Last edited by demkofour; 08-06-2018 at 06:04 PM.
Reply With Quote
  #2  
Old 08-06-2018, 06:50 PM
bigggbbruce's Avatar
bigggbbruce bigggbbruce is offline
Member
6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety  
Join Date: Apr 2011
Location: Where this month?
Posts: 2,260
Likes: 151
Liked 2,362 Times in 1,003 Posts
Default

Answered below..

Last edited by bigggbbruce; 08-06-2018 at 06:57 PM.
Reply With Quote
  #3  
Old 08-06-2018, 06:54 PM
armorer951's Avatar
armorer951 armorer951 is offline
Member
6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety  
Join Date: May 2012
Location: Evansville, Indiana USA
Posts: 3,514
Likes: 146
Liked 3,854 Times in 1,517 Posts
Default

Before removing material, you might disassemble/remove the safety to confirm the proper plunger and spring have been used inside the safety body itself. If the wrong spring is used, the plunger will not exert the proper tension on the assembly to prohibit it from lateral movement in the slide cavity.

The problem could also be related to the interface of the removable, right-side lever in its slot in the safety body. The right side lever should fit the slot tightly when inserted into it's "T" slot. If there is too much open gauge between the lever and the slot in the cavity, the lever itself can be moved sufficiently to impact the frame when the safety is engaged. Carefully peening the lever stem on each side can help close the gauge and keep the lever from tipping down. (If this is determined to be the issue) Side to side gauge on the frame rails (normal wear and tear) can also contribute to this issue.





__________________
Ret LE, FA Instr, S&W Armorer

Last edited by armorer951; 08-06-2018 at 07:24 PM.
Reply With Quote
The Following 3 Users Like Post:
  #4  
Old 08-07-2018, 03:03 PM
JohnHL JohnHL is offline
SWCA Member
6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety  
Join Date: Aug 2013
Location: High Ridge, Mo.
Posts: 1,478
Likes: 3,005
Liked 1,531 Times in 717 Posts
Default

If, after following armorer951's excellent advice and no improvement is realized, you might consider swapping the right side safety lever for a lever from a S&W 3rd gen 45 model (like a 4505, 4513TSW, 4566TSW, etc.).

The 45 levers have a small protrusion on the inside that prevents the safety body from moving laterally.

That could solve your problem.

John
Reply With Quote
The Following User Likes This Post:
  #5  
Old 08-08-2018, 12:42 PM
demkofour's Avatar
demkofour demkofour is offline
SWCA Member
6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety  
Join Date: Apr 2006
Location: LI, NY
Posts: 230
Likes: 514
Liked 247 Times in 69 Posts
Default

As it turned out, I disassembled the safety and discovered that the installed plunger was in fact the wrong one and that the spring had been cut down to a point where there was very little tension on the plunger... replacement parts are on the way thanks to armorer951!
Attached Thumbnails
6904 Binding Ambi Safety-e6d8a545-9da1-4af4-8325-a90120f10017-jpg  
__________________
Stay Safe...
jd SWCA #3276

Last edited by demkofour; 08-08-2018 at 12:44 PM.
Reply With Quote
The Following User Likes This Post:
  #6  
Old 08-09-2018, 01:23 AM
JohnHL JohnHL is offline
SWCA Member
6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety  
Join Date: Aug 2013
Location: High Ridge, Mo.
Posts: 1,478
Likes: 3,005
Liked 1,531 Times in 717 Posts
Default

Good call, armorer951!

John
Reply With Quote
  #7  
Old 08-09-2018, 02:32 AM
BLUEDOT37's Avatar
BLUEDOT37 BLUEDOT37 is offline
Member
6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety  
Join Date: Dec 2012
Location: N.E. OKLA.
Posts: 4,101
Likes: 3,255
Liked 4,233 Times in 1,797 Posts
Default

The OP already found his problem but if it didn't fix your's this thread has some other ideas that may help.

stiff/notchy decocker lever

.
__________________
► Caution: Slippery when wet ◄

Last edited by BLUEDOT37; 08-09-2018 at 02:34 AM. Reason: .
Reply With Quote
The Following User Likes This Post:
  #8  
Old 08-09-2018, 12:11 PM
RMFnLA RMFnLA is offline
Member
6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety  
Join Date: Aug 2018
Location: Los Angeles, CA
Posts: 162
Likes: 91
Liked 106 Times in 61 Posts
Default

Quote:
Originally Posted by demkofour View Post
As it turned out, I disassembled the safety and discovered that the installed plunger was in fact the wrong one and that the spring had been cut down to a point where there was very little tension on the plunger... replacement parts are on the way thanks to armorer951!
"I recently picked up an as new 6904 here on the Forum."

Reply With Quote
  #9  
Old 08-10-2018, 05:26 PM
demkofour's Avatar
demkofour demkofour is offline
SWCA Member
6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety  
Join Date: Apr 2006
Location: LI, NY
Posts: 230
Likes: 514
Liked 247 Times in 69 Posts
Smile

Quote:
Originally Posted by RMFnLA View Post
"I recently picked up an as new 6904 here on the Forum."

FWIW, thereís no doubt that the member here I purchased the pistol from did not do the alterations or had any idea of them... frankly, heís a righty, did not carry or fire the pistol and never tried to activate the safety/decocker left handed.When I originally took possession of the pistol and noticed the situation, he was immediately advised and recommended some steps including taking the pistol back.
In addition, Iím the sort of person who believes that things happen for a reason. Had I not bought the 6904 and had the problem I would not have met armorer951 and made a new forum friend! Who, I might add, has been a great help with this situation.
__________________
Stay Safe...
jd SWCA #3276

Last edited by demkofour; 08-10-2018 at 05:28 PM.
Reply With Quote
  #10  
Old 08-10-2018, 05:46 PM
adrianolsen adrianolsen is offline
Member
6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety 6904 Binding Ambi Safety  
Join Date: Sep 2010
Location: sacramento,ca.
Posts: 49
Likes: 4
Liked 49 Times in 25 Posts
Default

also, couple of things to add. the decocker body plunger comes in sizes .0320, .0325 , .0335. it might make it feel tight when moving the levers. use oil or grease in the slide where the plunger moves up and down. if it is too loose , the safety will drop while shooting. also, the lever spring is a lighter gage spring than the decocker body heavy spring. don't put the lever spring in the decocker body, will make the lever fall while firing
__________________
viking
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Turning Ambi-safety into a single sided safety? ziplock Smith & Wesson M&P Pistols 4 05-09-2015 04:15 PM
Ambi-Safety Mod CPTBeaker Smith & Wesson M&P 15-22 11 02-21-2012 08:36 AM
WTB Mod 39 Ambi Safety deltaenterprizes WANTED to Buy 1 09-02-2011 12:07 PM
Ambi-Safety Mod CPTBeaker Smith & Wesson M&P 15-22 9 01-14-2011 08:21 PM
Ambi safety? cush Smith & Wesson M&P 15-22 2 04-13-2010 02:18 PM

Powered by vBadvanced CMPS v3.2.3
smith-wessonforum.com tested by Norton Internet Security smith-wessonforum.com tested by McAfee Internet Security

All times are GMT -4. The time now is 04:57 PM.


Search Engine Optimisation provided by DragonByte SEO v2.0.42 (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
© S-W Forum, LLC 2000-2018
Smith-WessonForum.com is not affiliated with Smith & Wesson Holding Corporation (NASDAQ Global Select: SWHC)