Safariland Holster Retention Levels Explained: ALS vs SLS vs Level 1 to 3

Last updated June 2, 2026. By the Code 4 Uniforms Team

The FBI's Law Enforcement Officers Killed and Assaulted (LEOKA) program reported a preliminary count of 64 officers feloniously killed in the line of duty in 2024, according to data the FBI published in January 2025. Holster retention sits squarely in that conversation. When a subject grabs for a sidearm during a struggle, additional retention features buy critical seconds. The question most officers face is not whether to use a retention holster, it is which configuration their department requires and what the differences between ALS and SLS actually mean in practice. This guide covers it all from the source.

Key Takeaways

• Safariland retention levels (I through IV) represent the count of deliberate hand movements required to draw, not just the number of physical devices on the holster.
• The ALS (Automatic Locking System) and SLS (Self Locking System) are two distinct mechanical features that can be used separately or in combination.
• Level III, which pairs ALS with SLS, has become the most common requirement among patrol divisions updating their holster policies in recent years.

What Do Retention Levels Actually Mean?

A retention level is simply the count of deliberate, independent hand movements a trained officer must perform to draw the firearm, per Safariland's official holster retention education materials. One movement means Level I. Two movements mean Level II. Three movements mean Level III. That's the whole definition. The retention level framework was first developed in the 1970s by Bill Rogers, a former FBI agent who founded a holster company specifically to address weapon-retention challenges in law enforcement, as documented in Gun Digest's holster retention overview. The levels aren't assigned by a federal standard the way NIJ certifies body armor. They're a manufacturer framework that Safariland codifies more precisely than most other holster makers. That distinction matters when you're comparing holsters across brands for a department equipment policy.

Passive retention means friction alone, such as a molded shell or tension adjustment, with no mechanical device to defeat before drawing. Active retention adds at least one mechanical device that must be deliberately released. Both the ALS and SLS are active retention systems, which is why they qualify as Level I and Level II starting points respectively. A holster with no active device is typically called a passive or friction-fit design in most training contexts.

What Is the Automatic Locking System, and How Does It Work?

The ALS is an internal thumb-lever mechanism built into the holster body that locks the firearm in all directions the moment it's reholstered, per Safariland's product documentation for the Model 6360. Safariland introduced ALS-equipped duty holsters in 2006, with the Model 6360 and Model 6365 among the first to fit popular semiautomatic pistols, according to a press release Safariland issued through Police1. The mechanism sits inside the holster body rather than on top of the firearm, so nothing protrudes over the muzzle end or the slide. To draw, the officer depresses a small lever with the shooting thumb, and the firearm comes out straight. No twisting. No unsnapping. When the pistol is returned to the holster, the ALS resets and locks automatically. That auto-engage feature is what sets it apart from hood systems, which require the officer to manually close them after reholstering.

For officers carrying pistols with mounted lights or optics, ALS holsters are available across a wide range of fit options. Browse our duty holster collection to find the ALS model that fits your exact sidearm and accessory configuration.

What Is the Self Locking System, and How Is It Different?

The SLS uses a rotating hood that wraps over the rear of the firearm's slide or hammer area. According to Safariland's retention education materials, drawing from an SLS holster requires two distinct motions: pushing the hood down and rotating it forward to open the channel, then drawing the firearm. Those two steps classify SLS-only holsters as Level II. The SLS has one mechanical advantage that makes it particularly effective against weapon grabs. When someone applies upward force to the pistol in an attempt to pull it free, the hood tightens rather than releases. Conventional snap-top thumb-break designs can sometimes pop open under upward pressure. The SLS geometry works against that. Safariland's 6280 and 6285 series are the standard SLS-only Level II holsters, built with SafariLaminate construction and a suede inner lining that protects the gun's finish through thousands of draw and reholster cycles.

Level III: What Happens When You Combine ALS and SLS?

Combining ALS and SLS on one holster produces Level III retention. The Safariland Model 6360 is the most widely issued example. It's a mid-ride holster that pairs the ALS thumb lever with the SLS rotating hood. Drawing requires three actions: depress the ALS thumb lever, push the SLS hood down, rotate the SLS hood forward, then draw. Reholstering resets the ALS automatically. Officers train this sequence until it flows as a single smooth motion. Safariland's official product description for the 6360 states it locks the weapon in all directions upon holstering and allows a straight draw once both mechanisms are properly defeated. Level III has become the standard requirement at a growing number of patrol divisions, per open-source agency general orders reviewed across departments. It strikes the right balance between draw speed for a trained officer and genuine resistance to weapon grabs by an untrained subject.

Is There a Level IV, and Who Actually Uses It?

Yes, Safariland makes Level IV holsters. They add a third retention device, the SLS Sentry Guard, to the ALS and SLS combination, bringing the total deliberate hand movements to four. Level IV is not common in patrol. It's designed primarily for corrections environments where officers work inside detention facilities and face a higher risk of close-contact weapon disarmament attempts. The extra security is worth the slightly longer draw time in that controlled setting. For patrol officers responding to calls in the field, Level III covers the risk profile well and draws faster under stress with proper training. Adding Level IV hardware for patrol use is generally viewed in law enforcement training circles as increasing draw time without proportionate benefit in a street use-of-force situation.

ALS vs SLS vs ALS/SLS: Side-by-Side Comparison

The table below compares the three primary Safariland retention configurations using specifications drawn from Safariland's official product pages and retention education materials.

For officers running a pistol-mounted light, Safariland offers light-bearing variants of the 6360 series as well. The fit guide covers hundreds of firearm and light combinations. Browse our full duty holster lineup to find the right 6360 configuration for your sidearm, or head to our Safariland brand page to filter by model and specific firearm fit.

Which Retention Level Do Most Agencies Require?

Level III has become the most common patrol holster standard among agencies that have updated their equipment policies in recent years. Multiple patrol divisions have officially adopted Level III retention holsters as their duty standard, a trend reflected in industry reporting throughout 2024. The National Tactical Officers Association (NTOA) has reviewed and approved Level III holster designs for duty use, reinforcing the direction agencies are moving. Open-source department general orders consistently show Level III for uniformed patrol and Level II as a minimum for detectives and plainclothes personnel. Level I ALS holsters are most common for off-duty carry when the officer is out of uniform and a lower-profile configuration matters more than maximum retention. If your department hasn't issued a clear equipment policy, your armorer or training unit can point you to the relevant general order.

Officers in corrections, court security, or controlled-facility roles should follow their department's specific guidance, as those environments may call for Level IV or different carry position requirements entirely.

Does Training Matter More Than the Retention Level You Choose?

Yes, and anyone who has taught a weapons retention course will say so plainly. Retention hardware only works when the officer has trained enough draws from that specific holster to perform the release under stress without thinking about it. A Level III holster with hundreds of practice reps behind it is far more reliable than a Level I holster that has never been drilled. Many academies now build dedicated weapon-retention drills into basic training because FBI LEOKA data documents assault and disarmament attempts as a persistent threat category year after year. Since 2011, Safariland's Saves Club has recognized 2,193 public safety professionals whose lives were saved in part by their Safariland gear, according to a Police1 report covering the April 2024 Saves Club annual event. That number spans body armor and holsters combined, but it puts the life-safety stakes of proper gear selection into sharp relief. Buy the holster your department requires. Then train with it until the draw is automatic.

Frequently Asked Questions

Can I use a Safariland Level III holster for off-duty concealed carry?

A Level III holster is built for open-carry uniformed duty use and is too bulky for most concealed carry garments. The SLS hood and ALS lever both add height and width to the holster profile. Officers carrying concealed off-duty typically move to a Level I ALS holster or an inside waistband design that provides a lower profile and lighter weight for everyday civilian clothing.

Is the ALS or SLS faster to draw from for a trained officer?

Trained officers generally draw faster from an ALS holster because the single thumb movement trains more intuitively under stress than the two-step SLS push and rotate. The SLS requires a deliberate wrist rotation that adds a fraction of a second. Most law enforcement training data shows ALS draw times measuring slightly faster than SLS when practice volume is equal between the two systems.

Do Safariland holsters fit all variants of the same pistol model?

No. Safariland holsters are firearm-specific and require selecting the correct model number for your exact setup, including weapon lights and optics. The 6360RDS is designed specifically for pistols fitted with a red dot sight while the standard 6360 is not. Always check the Safariland fit guide for your exact firearm and accessory combination before purchasing to avoid a compatibility mismatch.

What is SafariLaminate and how does it hold up compared to traditional leather?

SafariLaminate is Safariland's proprietary molded material that provides a leather finish with the dimensional stability and moisture resistance of a hard shell design. The suede inner lining protects the firearm finish during repeated drawing and reholstering. SafariLaminate holds its molded shape better than traditional leather in wet or humid conditions, which matters for officers working outdoor patrol shifts in variable weather.

Can I reuse my current belt hardware when upgrading from a Level II SLS to a Level III Safariland holster?

Most Safariland Level II and Level III holsters share the same belt attachment options, including the mid-ride belt loop and the UBL universal belt loop. Officers moving from the 6280 to the 6360 for the same pistol often keep their existing belt hardware without any changes. Check the Safariland fit guide to confirm attachment compatibility before ordering, as some older mount styles may not be interchangeable.

Matching the right retention level to your assignment, your agency policy, and your training regimen is the core decision. For most uniformed patrol officers, a Level III ALS/SLS holster is the correct answer. It carries the deepest track record in law enforcement duty use and the widest fit coverage across current service pistols. Shop the complete lineup at our duty holsters collection or browse every Safariland model at our Safariland page.

Written by the Code 4 Uniforms Team, your source for law enforcement and public-safety duty gear.

Sources

• Safariland. 'Holster Retention.' Inside Safariland Education. Retrieved June 2, 2026. https://inside.safariland.com/education/holster-retention/
• Safariland. 'Security Mechanisms.' Inside Safariland Education. Retrieved June 2, 2026. https://inside.safariland.com/education/security-mechanisms/
• Safariland. 'Safariland Introduces New Retention Holster Concept to Its Line of Duty Holsters.' Police1 Press Release. Retrieved June 2, 2026. https://www.police1.com/police-products/duty-gear/press-releases/safariland-introduces-new-retention-holster-concept-to-its-line-of-duty-holsters-KJIyytXWjHw1pNfp/
• Safariland. 'Model 6360 ALS/SLS Mid-Ride, Level III Retention Duty Holster.' Product Page. Retrieved June 2, 2026. https://safariland.com/products/model-6360-als-sls-mid-ride-level-iii-retention-duty-holster-23319
• Federal Bureau of Investigation. 'Preliminary 2024 LEOKA Data.' January 2025. Retrieved June 2, 2026. https://www.fbi.gov/how-we-can-help-you/more-fbi-services-and-information/ucr/leoka
• Federal Bureau of Investigation. 'FBI Releases Officers Killed and Assaulted in the Line of Duty, 2023 Special Report.' May 14, 2024. Retrieved June 2, 2026. https://www.fbi.gov/news/press-releases/fbi-releases-officers-killed-and-assaulted-in-the-line-of-duty-2023-special-report-and-law-enforcement-employee-counts
• Police1. 'Together, We Save Lives: Safariland Hosts Saves Club Event to Honor Injured Officers.' April 2024. Retrieved June 2, 2026. https://www.police1.com/police-products/body-armor/together-we-save-lives-safariland-hosts-saves-club-event-to-honor-injured-officers