I have a mcgunn safe with a key and a Sargent and green leaf manual dial and I can't get it open with the key and I don't know how else to open it. What can I do to open it the safe serial is 105987

Question edited for clarity.
Question moved to home Security - Safes.

You can't. You have to open the safe with the Emergency Key, the combination Dial or in your case with the Electronic Keypad.

STEP 2 - CHANGING THE USER CODE
1-Open the safe by following step 1.
2-Press the Green set up button (Located on the
back cover or the hinge side of the back door
cover), the LCD display will turn Blue.
3-Enter your new user code (1-8 digits).
4-Press the # key.
5-The LCD display will turn Blue and show IN.
6-The LCD display will briefly show your new code.
7-Your new user code is now set to open the safe
NOTE: It is highly recommended to leave the
safe door open and practice your new code
several times before closing the door.

Manual

https://www.manualslib.com/manual/1800698/Amsec-Dl4000.html#manual

..

First insert the key into the lock, if there is a keyhole, and turn it until the plunger pops out. (You must have the key to unlock the safe for the keyed version of the safe.) Remove the key.
Set the dial to zero. Turn the dial to the right (clock-wise) three times (pass zero three times) then stop at the first digit in the combination. Turn the dial to the left twice and stop at the second digit given in the combination. Turn the dial to the right again and stop as soon as you reach the third digit. The safe should open.

Sentry has the manual available for the S3110 safe on the product page: http://www.sentrysafe.com/Products/36/S3110_FIRE-SAFE_Home_Safe . The direct link to the manual is http://www.sentrysafe.com/pdfs/OwnersManuals/514472.pdf . The directions for opening the safe are on page 2.

If you do not have the key and your safe has a keyhole, you probably need to contact Sentry or a locksmith.

I hope this helps.

Cindy Wells

Our tech team at Quality gun safes wall safes and floor safes store in Burlingame Ca produced this video

A1 Locksmith Google

browning.com

go to google and look for it.

Are you sure that you are turning the dial correctly? 3 Digit Combination Lock
31-10-31

1. NOTE: If your safe DOES NOT have a key, skip Step 3.
   
2. Turn the dial to zero.
   
3. Insert your key and turn it until the plunger pops out.
   
4. Turn the dial to the left (counterclockwise) three times to the first number of the combination (pass the first number of your combination two times, stopping on it the third time).
   
5. Turn the dial to the right (clockwise) two times to the second number of the combination (pass your second number once, stopping on it the second time).
   
6. Turn the dial to the left to the last number (stop the first time on your last number).
   
7. 
   Pull the handle down; the door should open.

3 Digit Combination Locks for Security Safes
31-10-31

1. Turn the dial to zero.
   
2. Turn the dial to the left (counterclockwise) three times to the first number of the combination (pass the first number of your combination two times, stopping on it the third time).
   
3. Turn the dial to the right (clockwise) two times to the second number of the combination (pass your second number once, stopping on it the second time).
   
4. Turn the dial to the left to the last number (stop the first time on your last number).
   
5. Insert the key; turn right.
   
6. 
   Pull on the key while it's in the lock to open the door.

3 Digit Combination Locks for Gun Safes
31-10-31

1. Turn the dial to zero.
   
2. Turn the dial to the left (counterclockwise) three times to the first number of the combination (pass the first number of your combination two times, stopping on it the third time).
   
3. Turn the dial to the right (clockwise) two times to the second number of the combination (pass your second number once, stopping on it the second time).
   
4. Turn the dial to the left to the last number (stop the first time on your last number).
   
5. 
   Pull the handle down; the door should open.

Electronic Locks
31-10-31

1. Insert the tubular key into the lock to the left of the key pad.
   
2. Turn the key all the way to the right until the plunger pops out.
   
3. Press the five-digit factory code. The green Proceed light will come on.
   
4. Pull the handle down; the door should open.

4 Digit Combination Lock
31-10-31-10

1. Turn the dial to zero.
   
2. Turn the dial to the left (counterclockwise) four times to the first number of the combination (pass the first number of your combination three times, stopping on it the fourth time).
   
3. Turn the dial to the right (clockwise) three times to the second number of the combination (pass your second number twice, stopping on it the third time).
   
4. Turn the dial to the left (counterclockwise) two times to the third number of the combination (pass the third number of your combination one time, stopping on it the second time).
   
5. Turn the dial to the right to the last number (stop the first time on your last number).
   
6. Pull the handle down; the door should open.

You can find more information about your Sentry Safe at www.SentrySafeShop.com

Locksmiths advise these Opening instructions for sentry fireproof electronic security safes. Insert the tubular sentry key into the lock to the left of the key pad. Turn the key all the way to the right until the plunger pops out. Press the five-digit factory code. The green Proceed light will come on. Pull the handle down; to crack the sentry door open.

sentry safes opening instructions for 4 # combo locks
Turn the dial to zero.
Turn the dial to the left (counterclockwise) four times to the first number of the combination (pass the first number of your combination three times, stopping on it the third time).
Turn the dial to the right (clockwise) three times to the second number of the combination (pass your second number twice, stopping on it the third time).
Turn the dial to the left (counterclockwise) two times to the third number of the combination (pass the third number of your combination one time, stopping on it the second time).
Turn the dial to the right to the last number (stop the first time on your last number).
Pull the handle down to crack the sentry safe open.

Here is the turning sequence:
General Turning Sequence Instruction NOTE SAFE MODEL 5054/5055/5059/5080/5081/5084/5111/5190/5195/5575/5700/5702.

Combinations consist of FOUR (4) positions (numbers).
BEFORE YOU START
Before you begin, please clear all settings by turning the dial CLOCKWISE (to the right)
three times. We also recommend to try the procedure with your safe door open first. Then
follow these steps:
TURNING SEQUENCE
1. Start the dial on 0 (zero).
2. Turn the dial to the RIGHT, passing your first combination number FOUR (4)
times and stopping at that number on the fifth time around.
3. Turn the dial to the LEFT, passing your second combination number TWO (2)
times and stopping at that number the third time around.
4. Turn the dial to the RIGHT, passing your third combination number ONE (1) time
and stopping at that number the second time around.
5. Turn the dial to the LEFT, to the last combination number and STOP.
6. Insert the key in the cylinder lock and turn RIGHT to open.
Your safe should now be opened.

i am a locksmith that has worked on several of these. The safe is manufactuered with three types of lock mechanisms 1. combo dial 2. digital 3. advanced digital the advanced digital is what you have there are no green lights on it. look at the manual carefully there are 2 seperate sections on the digital key pads yours will be the second.