In this guide (9 sections)
- Our top picks
- Gun safe lock replacement comparison by codes, bolt and power
- Best gun safe lock replacement picks
- Will a replacement lock fit your gun safe?
- How to replace a gun safe lock on your own safe
- Gun safe lock problems owners run into, and the fix
- How we picked these gun safe locks
- Gun safe lock limits – fire rating and storage rules
- Questions safe buyers ask
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How we picked these
- Review themes from 3 verified-buyer and owner reviews on retailer sites, so every pick shows what buyers praise and complain about.
- 15 owner posts, user discussions and expert reviews read across 9 sources.
- Every spec checked against 15 maker and retailer pages.
- We did not test these products ourselves, and we say so. All sources are linked at the end of this guide.
Our top picks
- Best for most gun safes · 3.4/5Sargent & Greenleaf Spartan 1006-108
Best mechanical dial lock · 3.0/5Sargent & Greenleaf 6730-100
Best for a family with several users · 3.9/5Sargent & Greenleaf Titan 2007-102
Best two-user keypad with a backlit keypad · 3.2/5LaGard 700 Series Basic
Best with a time delay · 3.4/5Sargent & Greenleaf 6120 Electronic Safe Lock
The short answer
- For most owners I'd pick the Sargent & Greenleaf Spartan 1006-108: a UL Type 1, two-user keypad lock with an auto-relocking PivotBolt.
- Want no battery at all? The S&G 6730-100 dial lock is the UL Group 2 mechanical standard with 1 million combinations.
- The S&G Titan takes up to 10 codes for a family, the LA GARD 700 Basic adds a backlit keypad, and the S&G 6120 adds a 1-9 minute time delay.
- Check your lock body and footprint first: lock sales are often final, and a DIY swap can void the safe's warranty.
The best gun safe lock replacement for most owners is the Sargent & Greenleaf Spartan 1006-108, a UL Type 1 electronic lock that relocks on its own and uses S&G’s standard Magic Module footprint. If you never want a battery again, the S&G 6730-100 combination lock is the mechanical choice. Locked out right now? Read our guide to opening a safe you own first.
From our notes: The 225 lb bolt rating appears on both the Spartan and Titan pages, so strength didn’t separate these locks. One Northwest Firearms forum line did: a locksmith replaces 6120 locks with Spartans once they pass about seven years. Side by side, the real differences were user codes, bolt style and power, so those three columns lead the table I built below.
Gun safe lock replacement comparison by codes, bolt and power
A gun safe lock replacement should match how many user codes you need, your safe’s bolt style and whether you accept a battery. Each S&G electronic lock here is rated for 225 lbs of bolt end pressure, and each keypad has a penalty lockout.
| Lock | Entry | Codes | Bolt style | Power | UL listing |
|---|---|---|---|---|---|
| S&G Spartan 1006-108 | Keypad | 2 | PivotBolt, auto relock | One 9V | Type 1 |
| S&G 6730-100 | Dial | 1 combination | Mechanical | None | Group 2 |
| S&G Titan 2007-102 | Keypad | 10 | Direct Drive | 9V | Type 1 |
| LA GARD 700 Basic | Backlit keypad | 2 | Swingbolt | Two 9V | Type 1 |
| S&G 6120 | Keypad | 9 | Motor square bolt | 9V | Type 1 |
Best gun safe lock replacement picks
The Spartan suits most gun safes, the 6730 suits owners done with batteries, and the rest add users, a lit keypad or a time delay. Scores follow our how we score rubric.
Sargent & Greenleaf Spartan 1006-108: Best gun safe lock replacement for most safes
3.4Best Safe Spec Score out of 5
- Security (lock and build)7/10
- Access (speed and ease)8/10
- Capacity4/10
- Value8/10
No fire claim (it is a lock), so fire is left out. I gave security 7 for a UL Type 1 listing, motor blocking and 225 lb bolt rating; access 8 for a fast keypad on one battery; capacity 4 because it holds only two codes; value 8 for a complete retrofit kit.
What we like
- PivotBolt relocks on its own when the safe's boltwork closes, and the stainless lock bolt withstands 225 lbs of end pressure (S&G)
- Tested up to 10,000 openings on one 9V battery (Safe and Vault Store spec list)
- S&G says it installs with no special tools or drilling
What we don't like
- Only two codes (master and user)
- Dealer note: S&G warranty repairs go back to the factory and can take 2-3 weeks (Safe and Vault Store)
What owners and reviewers say review themes from 3 owner reviews, plus 3 posts and reviews we read
Praised for
- A Northwest Firearms locksmith steers owners of aging 6120 locks to the Spartan
- A Shooters' Forum owner with a sticky S&G lock was weighing a Spartan upgrade for its EMP protection
Common complaints
- Owners on Safe and Vault Store are told lock sales are final and repairs go back to S&G for 2-3 weeks
Read on: Northwest Firearms: S&G Lock Keypad Intermittent (read in full) · Safe and Vault Store: S&G 1006 Spartan product page (3 reviews) · Shooters' Forum: Sticky Sargent & Greenleaf lock (search excerpt)
Who it's for: For an owner replacing a tired keypad or a dial on their own gun safe who needs one or two codes; it holds only a master and a user code, and lock sales are often final, so confirm the lock body first.
The Sargent & Greenleaf Spartan 1006-108 is an EMP-resistant, two-user electronic gun safe lock from Sargent & Greenleaf, sold with a PivotBolt body and a one-battery keypad. I put it first because the bolt relocks itself when the boltwork closes, and S&G says it needs no drilling. Safe and Vault Store lists up to 10,000 openings per 9V battery. The catch: a master and one user code only.
Sargent & Greenleaf 6730-100: Best mechanical gun safe lock
3.0Best Safe Spec Score out of 5
- Security (lock and build)8/10
- Access (speed and ease)4/10
- Capacity3/10
- Value8/10
No fire claim, so I left fire out. I gave security 8 for a UL Group 2 lock with a relock trigger; access 4 because dialing is slow and hard in the dark; capacity 3 since it holds one combination; value 8 because there is no battery or keypad to replace.
What we like
- UL Group 2 listed, 1 million possible combinations, all-metal wheels (S&G)
- No battery or electronics to fail
- Four-way drive cam for universal mounting (S&G)
What we don't like
- Slow to dial and hard to read without a light
- Changing the combination means the key-changeable wheels behind the back cover, a job dealers leave to a technician
What owners and reviewers say from 4 reviews and posts we read
Praised for
- An r/Safes owner who swapped in a 6730-100 on a Winchester safe found the install was not bad at all
- A locksmith on r/Locksmith calls S&G mechanical locks extremely reliable compared with electronic failures
Common complaints
- A High Road owner says people with dials tend to leave the safe open after the tedious dialing
Read on: r/Safes: Winchester TS 20-30 S&G lock install (search excerpt) · r/Locksmith: I've been abusing my S&G for over a decade (search excerpt) · r/NFA: Question on safe (search excerpt) · The High Road: Electronic safe lock issue (LaGard), read in full
Who it's for: For an owner whose keypad has failed once too often and who opens the safe a few times a week; dialing is slow and hard to read in the dark, and a combination change usually needs a safe technician.
The Sargent & Greenleaf 6730-100 is a UL Group 2 mechanical lock from Sargent & Greenleaf with three metal wheels, a relocker trigger and 1 million possible combinations. I’d choose it when a keypad has failed you before, since its reliability doesn’t depend on a battery. An r/Safes owner found his own install easier than expected. It is slow to dial.
Sargent & Greenleaf Titan 2007-102: Best keypad gun safe lock for a family
3.9Best Safe Spec Score out of 5
- Security (lock and build)8/10
- Access (speed and ease)8/10
- Capacity9/10
- Value6/10
No fire claim, so fire is left out. Security 8 for UL Type 1, motor blocking and a 225 lb bolt; access 8 for keypad speed; capacity 9 for 10 codes; value 6 because many homes don't need that many users.
What we like
- Up to 10 codes in single, dual-control or manager modes (S&G)
- Direct Drive square bolt withstands 225 lbs of bolt end pressure; you turn the keypad ring to move it (S&G)
- UL Type 1 listed (Titan D-Drive manual)
What we don't like
- A Northwest Firearms owner could not find a spare S&G keypad from online sellers
- More programming than a two-user lock
What owners and reviewers say from 2 reviews and posts we read
Praised for
- Northwest Safe's technician reports a relatively low rate of field issues and a long keypad life
Common complaints
- A Northwest Firearms owner says S&G told him his keypad is still used on Titan locks, yet no online seller listed it
Read on: Northwest Safe: What Are the Best Safe Locks? (technician picks) · Northwest Firearms: S&G Lock Keypad Intermittent (read in full)
Who it's for: For an owner sharing the safe with a spouse or grown kids who each want a code; the Direct Drive version needs its rotating keypad, and spare keypads can be hard to find from online sellers.
The Sargent & Greenleaf Titan 2007-102 is a 10-user electronic safe lock from Sargent & Greenleaf with a Direct Drive bolt you move by turning the keypad ring. My pick when each adult wants a code, it also offers dual-control and manager modes. One Northwest Firearms owner couldn’t find a spare S&G keypad online, so note the part number.
LaGard 700 Series Basic: Best two-user gun safe lock with a backlit keypad
3.2Best Safe Spec Score out of 5
- Security (lock and build)7/10
- Access (speed and ease)7/10
- Capacity4/10
- Value7/10
No fire claim, so I left fire out. I gave security 7 for UL Type 1 and VdS Class 2; access 7 for a backlit keypad; capacity 4 for two codes; value 7 given the two-battery draw and older-model complaints.
What we like
- Backlit keypad, 6-digit codes, low and critical battery warnings (dormakaba)
- UL 2058 Type 1 and VdS Class 2 listed (dormakaba factsheet)
- Dual-handed swingbolt or deadbolt body; this kit is the swingbolt
What we don't like
- High Road owners report failed keypads on 2006-era LA GARD locks (older models)
- Takes two 9V batteries and holds only two codes
What owners and reviewers say from 3 reviews and posts we read
Praised for
- A gun safe review site calls the La Gard Basic II simple, easy to use, reliable and reasonably priced
Common complaints
- Several High Road owners had 2006-era LA GARD keypads fail; one lock fired its relockers and had to be drilled by a technician
- A safe technician notes older LA GARD keypads are hardwired, while S&G keypads unplug
Read on: The High Road: Electronic safe lock issue (LaGard), read in full · Gun Safe Reviews Guy: What to look for in a gun safe (search excerpt)
Who it's for: For an owner who opens the safe in a dim closet and needs one or two codes; it runs on two 9V batteries, and older LA GARD keypads drew failure reports from owners.
The LaGard 700 Series Basic is a UL Type 1 electronic safe lock from LA GARD (dormakaba) with a backlit keypad, a manager and a user code, and a swingbolt body that can also be set up as a deadbolt. I like it for a dim closet. It warns when its two 9V batteries run low. High Road owners reported failed keypads on 2006-era LA GARD locks, an older generation.
Sargent & Greenleaf 6120 Electronic Safe Lock: Best gun safe lock with a time delay
3.4Best Safe Spec Score out of 5
- Security (lock and build)7/10
- Access (speed and ease)7/10
- Capacity8/10
- Value5/10
No fire claim, so fire is left out. Security 7 for UL Type 1 and a deadlocking 225 lb bolt; access 7 (the time delay slows access when on); capacity 8 for nine codes; value 5 for an older design with failure reports.
What we like
- 9 codes (1 master, 8 users) and a 1-9 minute time delay (S&G)
- Motor relocks and deadlocks the square bolt; withstands 225 lbs of bolt end pressure (S&G)
- A High Road owner fixed a failing S&G keypad by unplugging it and plugging in a new one
What we don't like
- A Northwest Firearms locksmith says older 6120s have a high failure rate after around 7 years
- Amazon showed only a few units left when I checked
What owners and reviewers say from 3 reviews and posts we read
Praised for
- An owner swapped a failing S&G keypad by plugging in a new one and had no problems for three years
- A Northwest Firearms owner says one battery lasts years on his safe
Common complaints
- One owner's 6120 kept eating batteries because a bare wire was grounding out
- A locksmith reports a high failure rate after around 7 years
Read on: The High Road: Electronic safe lock issue (LaGard), read in full · Northwest Firearms: S&G Lock Keypad Intermittent (read in full)
Who it's for: For an owner with an older 6120 who wants a like-for-like swap, or who wants a time delay; locksmiths report older 6120s failing after years of use, and the listing says the master reset code must be added before the default code is changed.
The Sargent & Greenleaf 6120 Electronic Safe Lock is a motor-driven keypad lock from Sargent & Greenleaf with nine codes, a management reset code and a 1-9 minute time delay. Its keypads plug in, and a High Road owner fixed a failing one that way, but a locksmith reports older 6120s failing after about seven years.
Which gun safe lock replacement should you get
- One or two codes, simplest swap: Spartan 1006-108.
- No battery, ever: 6730-100.
- Three or more users: Titan 2007-102.
- A dim closet: LA GARD 700 Basic.
- A time delay or an old 6120: 6120.
I skipped a biometric lock: SecuRam’s ScanLogic had no retrofit kit on Amazon US.
Will a replacement lock fit your gun safe?
A replacement lock fits when it matches your safe’s mounting footprint and bolt style. Safe and Vault Store warns that “all lock sales are final and cannot be returned once shipped.”
- Footprint. S&G kits use its standard Magic Module footprint, which S&G sells as an easy upgrade path. A budget safe with its own lock module may not take one; an r/Safes owner asked exactly that about a Sentry.
- Bolt style. PivotBolt and swingbolt locks follow the safe’s boltwork; Direct Drive locks attach to it.
When unsure, ask the safe maker which lock bodies fit.
How to replace a gun safe lock on your own safe
Replace a gun safe lock only with the door open, and test it many times before closing. S&G’s Titan installation video in this section shows the job.
- Read your safe maker’s warranty terms, then open the safe and keep the door open.
- Remove the door’s back panel and old lock, noting the bolt direction.
- Fit the new lock body and route the keypad cable without pinching it.
- Mount the keypad, add a fresh 9V battery and set your codes.
- Lock and unlock at least ten times with the door open, then close it.
Gun safe lock problems owners run into, and the fix
Most gun safe lock problems start as a weak 9V battery or a tired keypad, and both give warning first.
The keypad needs two or three tries
A High Road owner wrote: “A sign that a problem is developing is when you have to enter the numbers more than once to get it to open.” I’d change the battery; if it continues, replace the keypad or lock while the door is open.
A dead battery or a dead keypad
Liberty says a 9V lasts 12 to 18 months. At three openings a day, the Spartan’s 10,000-opening rating would last about nine years, so the calendar sets the date: change it yearly. If keypads keep failing, a dial or a Simplex push-button lock ends the battery problem.
A SecuRam ProLogic lock after the 2025 research
At Defcon in 2025, researchers showed flaws in SecuRam ProLogic locks used by Liberty and other brands; SecuRam said future models would fix them. We’d ask the safe maker about a standard-footprint lock from another maker.
Warranty and DIY installs
Northwest Safe says “in most cases, replacing your locking mechanism yourself will void your warranty.” Our gun safe brands to avoid list shows how support varies.
How we picked these gun safe locks
We picked locks that two or more top-ranking pages for this search recommend and that Amazon US showed in stock as kits on November 4, 2026. I have not handled them; specs come from S&G and dormakaba, and owner notes from 15 owner and technician reports. Northwest Safe names the Titan and 6730, Guardian the 6730 and LA GARD Basic, Liberty the LA GARD Basic and 6120; MBA USA and Safe and Vault Store stock the Spartan. Amazon itself sold none of the five.
Gun safe lock limits – fire rating and storage rules
A new gun safe lock changes how you get in, not the safe’s fire rating. That comes from the body and door, and from whether UL or Intertek tested it; our fire rated gun safe picks name each certifier. Storage rules vary by state and city, so check your official state and local firearm laws; this is not legal advice.
Questions safe buyers ask
Will a new lock fit my gun safe?
S&G builds its kits to a standard mounting footprint and sells them as retrofits for home gun safes. Budget safes with their own lock module often can't take one. Check the lock body style and ask the safe maker before ordering, since many dealers don't take locks back.
Electronic or mechanical lock for a gun safe?
A dial lock needs no battery and lasts for decades but is slow and hard to read in the dark. A keypad opens in seconds and lets you set your own code, but it needs a battery and is the part safe techs replace most.
Can I replace my gun safe lock myself?
S&G says its Spartan needs no special tools or drilling, but dealers warn that a DIY swap can void the safe's warranty. Read your safe maker's terms first, work only with the door open, and use a safe technician if unsure.
How often should I change the battery in a safe lock?
Once a year. Liberty Safe says a 9V battery normally lasts 12 to 18 months, and a weak battery can light the keypad without pulling the bolt. Use a name-brand alkaline battery.
Is SecuRam or Sargent and Greenleaf better?
Both are dealer favorites. Researchers showed flaws in SecuRam ProLogic locks in 2025 and SecuRam said future models would fix them. I feature S&G here because complete S&G kits are sold on Amazon US.
Does a new lock change my safe's fire rating?
No. The fire rating comes from the safe's body, door and seal and from who tested it. A lock swap changes how you get in, not how long the safe holds out in a fire.
Why you can trust this guide
- Products are checked against manufacturer specifications, user manuals and long-term owner reports.
- Each pick is scored on the Best Safe Score: security (lock and build), fire protection, access, capacity and value. Scores come from published specs, independent ratings and owner reports, not hands-on testing.
- We never accept payment for placement. Affiliate commissions do not affect rankings.
Last reviewed . Read our research process and editorial policy, or report an error.
Sources
- Sargent & Greenleaf: Spartan EMP-resistant gun safe lock
- Sargent & Greenleaf: Titan electronic safe lock
- Sargent & Greenleaf: Model 6730, 6731, 6741 Group 2 mechanical lock
- Sargent & Greenleaf: Model 6120 electronic safe lock
- S&G Titan D-Drive lock manual (PDF)
- dormakaba: LA GARD 700 Basic factsheet (PDF)
- Safe and Vault Store: S&G 1006 Spartan
- Liberty Safe: Common problems with electronic safe locks
- Liberty Safe: Top rated electronic gun safe locks
- Northwest Safe: What are the best safe locks?
- Guardian Safe & Vault: Choosing the best safe lock
- MBA USA: Electronic safe locks and parts
- WIRED: Hackers went looking for a backdoor in high-security safes
- The High Road: Electronic safe lock issue (LaGard)
- Northwest Firearms: S&G lock keypad intermittent
Reviews and discussions we read
- Northwest Firearms: S&G Lock Keypad Intermittent (read in full)
- Safe and Vault Store: S&G 1006 Spartan product page (3 reviews)
- Shooters' Forum: Sticky Sargent & Greenleaf lock (search excerpt)
- r/Safes: Winchester TS 20-30 S&G lock install (search excerpt)
- r/Locksmith: I've been abusing my S&G for over a decade (search excerpt)
- r/NFA: Question on safe (search excerpt)
- The High Road: Electronic safe lock issue (LaGard), read in full
- Northwest Safe: What Are the Best Safe Locks? (technician picks)
- Gun Safe Reviews Guy: What to look for in a gun safe (search excerpt)
Best Safe Editorial Team
Research & editorial
We research home safes, gun safes and fireproof safes for people protecting firearms, documents and valuables: lock types (mechanical dial, electronic keypad, biometric, key), steel gauge, bolt work and pry resistance, independent fire ratings from UL or Intertek (ETL), how fast you can get in under stress, bolt-down options and legal storage rules. Every guide follows our published research process and editorial policy.
