Est. 2014 | USA Small Business

SureFire 623LMG-B | Mossberg 500/590 Integrated WeaponLight – 1000 Lumens, 200m Tactical Reach
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Ships today or next day on most orders that are "In Stock". Some orders that are custom or large may take extra time to prepare.
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- Shipping times are estimations. Items that are custom, delayed, rejected, or affected by other acts of god will take additional time.
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Return & Exchange policy:
- Summary: Don't take those sweet Instagram pics and then try to return a used item. Must be within 30 days of delivery.
- Exchanges: Realized you need a different item? That's ok! Exchanges and returns are incredibly easy.
- We are a Small Business: We do the most we can to help with return costs, but we are not Amazon and cannot take hits or losses like Amazon.
- Wrong Items: Mistakes rarely happen. Atomic Defense takes pictures of orders before they are packaged and shipped. We pay for return, recertification, and exchange shipping costs if we ever make a mistake on your orders.
- Rules for Returns: We will deduct refurbishing costs, plus materials and labor, of used products or modified products - or decline the return. This includes, but is not limited to; products with residue, smells, scratches, missing parts, debris, dents and damage. **We reserve the right to refuse returns. Refused returns shipping cost back to the buyer are not covered by Atomic Defense.
- Packaging: Ensure returns are packaged safely with thick padding on all six sides. Failure to correctly package returns may damage products and cost will be deducted from Buyer's account or return refused.
- Bulletproof products: No one else accepts returns on ballistic items. We do.** However, recertification X-Ray costs on returned ballistic items is 20%.
- Starting a return/exchange: Click here
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SureFire 623LMG-B: Seamlessly Integrated 1,000-Lumen WeaponLight Forend for Mossberg 500/590
- The SureFire 623LMG-B is a professional-grade replacement forend specifically engineered for Mossberg 500/590 shotguns, featuring a powerful, integrated 1,000-lumen WeaponLight designed to combine durability, functionality, and cutting-edge illumination.
- It provides dominant tactical illumination with a 1,000-lumen recoil-proof LED that ensures clear visibility and enhanced target acquisition in low-light situations. The Total Internal Reflection (TIR) lens creates a beam optimized for medium to long-range use, with enough peripheral lighting for crucial situational awareness.
- Engineered for unyielding performance and superior control, it features a Mil-Spec hard-anodized aluminum bezel and a tough, lightweight polymer forend body to withstand harsh environments. This integrated system replaces the original factory forend, streamlining operation and improving both functionality and ergonomics, and includes an intuitive switching system with a momentary-on tape switch, a constant-on toggle switch, and a system-disable rocker switch for complete operational command.
- Designed for mission-critical readiness, it runs on two included 123A batteries for up to 1.25 hours of high output runtime, making it ready for any critical mission or home defense application. The 623LMG-B is designed, engineered, and built in the USA, ensuring trusted quality and performance when your safety and operational success depend on it.
SureFire 623LMG-B Features & Specifications
The SureFire 623LMG-B is a professional-grade replacement forend for Mossberg 500/590 shotguns, featuring an integrated 1,000-lumen WeaponLight. Its recoil-proof LED and Total Internal Reflection (TIR) lens deliver a far-reaching, intense beam optimized for medium to long-range use, with ample peripheral light for situational awareness. The construction combines a lightweight polymer body with a Mil-Spec hard-anodized aluminum bezel for durability.
It offers versatile switching: a momentary-on tape switch, a constant-on toggle, and a system-disable rocker switch ensure tactical control and safety. Built for harsh conditions, it includes an optically coated tempered window and weatherproof seals. Powered by two included 123A batteries, it provides 1.25 hours of runtime. Key specs include a 10.3-inch length, 17.2-ounce weight, 10,600 candela intensity, and 200-meter beam distance. This WeaponLight is designed and built in the USA for trusted performance.
623LMG-B Key Features:
- Integrated Forend System: Specifically designed to replace the factory forend on Mossberg 500/590 shotguns, streamlining weapon ergonomics and functionality.
- High-Output LED: A recoil-proof LED delivers an intense 1,000-lumen beam with wide reach for superior target identification.
- Precision TIR Lens: The Total Internal Reflection (TIR) lens focuses the light into a far-reaching, intense beam with excellent surround light for peripheral vision and situational awareness.
- Robust Construction: Features a tough polymer forend body paired with a Mil-Spec hard-anodized aluminum bezel and weatherproof seals for durability in demanding conditions.
- Versatile Switching: Offers multiple switching options for tactical flexibility, including a momentary-on tape switch, a constant-on toggle, and a system-disable rocker switch.
- Extended Runtime: Delivers 1.25 hours of continuous high output on two included 123A lithium batteries.
- Compact and Lightweight Design: Measures 10.3 inches in length and weighs 17.2 ounces with batteries, ensuring minimal impact on weapon handling.
- Made in the USA: Designed, engineered, and built in the USA to ensure the highest standards of quality and performance.
What's in the box of the SureFire 623LMG-B?
- (1) SureFire 623LMG-B WeaponLight Forend
- (2) 123A Lithium Batteries
- (1) User Manual
- (1) Warranty Information Card
SureFire 623LMG-B FAQs
What shotguns is the SureFire 623LMG-B compatible with?
The SureFire 623LMG-B is specifically designed as a replacement for OEM forends on Mossberg 500 and 590 shotguns. It is not compatible with other shotgun models.
How bright is the light output from the 623LMG B?
The integrated LED generates an impressive 1,000 lumens of blinding white light. This makes it highly suitable for both close- and medium-range tactical scenarios.
What is the battery life, and what type of batteries does it use?
The SureFire 623LMG-B provides a runtime of approximately 1.25 hours on high output. It uses two 123A batteries, which are included with the product.
Is the SureFire 623LMG-B weatherproof?
Yes, the WeaponLight is built for reliability in tough conditions. It is constructed with an optically coated tempered window, O-ring, and gasket seals to ensure dependable performance in adverse weather.
What kind of beam does the 623LMG-B produce?
The Total Internal Reflection (TIR) lens focuses the light into a far-reaching, intense beam. It also provides excellent surround light for peripheral vision, making it versatile for a variety of applications.
Can the WeaponLight be deactivated for storage or transport?
Absolutely. The 623LMG-B features an intuitive rocker switch that allows you to deactivate the light. This is essential for safe storage, transport, or to ensure light security.
What materials are used in the construction of the 623LMG-B?
The forend body is built from tough, lightweight polymer. The WeaponLight component is made from aerospace aluminum with a Mil-Spec hard-anodized finish for enhanced durability.
How much does the SureFire 623LMG-B weigh?
With batteries installed, the SureFire 623LMG-B weighs 17.2 ounces (487 grams).
Is the SureFire 623LMG-B made in the USA?
Yes, every SureFire product, including the 623LMG-B, is proudly designed and built in the USA. This ensures the highest quality and performance standards.
If a customer is looking to purchase the SureFire 623LMG-B, what's the recommended way to do so?
You can acquire the SureFire 623LMG-B through Atomic Defense, an authorized distributor of SureFire products. We provide reliable customer service and access to top-quality illumination tools, ensuring the authenticity and quality of the SureFire products we offer. For those interested in purchasing the SureFire 623LMG-B or exploring other premium SureFire offerings, contacting Atomic Defense guarantees a knowledgeable and supportive purchasing experience.
- We are a Small Business: We do the most we can to help with return costs, but we are not Amazon and cannot take hits or losses like Amazon.
- Lifetime Warranty: Atomic Defense will always stand behind our products. Our lifetime warranty covers any defects and ensures that you never need to worry about parts or the quality of your orders for the entire life of the product.
- Wrong Items: Atomic Defense takes pictures of orders before they are packaged and shipped. We pay for return, recertification and exchange shipping costs if we ever make a mistake on your orders.
- Rules for Returns: We may deduct refurbishing costs, plus materials and labor, of used products or modified products. This includes, but is not limited to; products with residue, smells, scratches, missing parts, debris, dents and damage. **We reserve the right to refuse returns.
- Packaging: Ensure returns are packaged safely with thick padding on all six sides. Failure to correctly package returns may damage products and will be deducted from Buyer's account.
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Start a Return or Exchange
Visit our return portal to begin the self-serve return/exchange process.
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General Products:
- Must be within 30 days of package delivery.
- No need to purchase a shipping label! Atomic Defense will give you a pre-paid one.
Ballistic and Bulletproof Products:
- Most companies will not accept any returns on ballistic or bulletproof items. We offer recertification as a courtesy.
- Must be within 30 days of package delivery.
- No need to purchase a shipping label! Atomic Defense will give you a pre-paid one.
- A re-certification cost of 20% applies to returns of ballistic and bulletproof products.
- The 20% recertification covers the cost of ensuring the armor is safe. Usually starting with X-Raying the armor for cracks underneath the coating, inspection for damage, and water damage testing. Without this 20%, we would not be able to offer returns on armor.
- There is no way for us to know how or if it was used once shipped, and we have to consider them unsafe until retested, inspected and certified.
- Exchanges and non-ballistic products do not have a re-certification cost.