Frequently Asked Questions (FAQs) * Where do I go for more information on the ION product or LMT-AT brand? – For ION product information go to our ‘Resources’ tab. – For more information on the LMT-AT brand & it’s roots with LMT Defense go to our Our Story webpage. – Additionally, you can reach out directly to the LMT-AT support team at email: Sales@lmt-at.com, by using the Contact Us form on our website or via phone by calling: 309-558-5554. * Know the LMT brand is known for its military contracts & stringent testing & quality standards, what is LMT Advanced Technologies relationship to LMT Defense? – LMT Advanced Technologies or LMT-AT for short was founded by the LMT Defense founder, Karl Lewis, as a sister company to LMT Defense which operates out of the same building as LMT Defense. Founded to be dedicated to providing innovative shooting solutions with the same focus of providing high quality, reliable, and durable products that provide or enhance system modularity, accuracy, and overall performance by continuously striving to exceed the highest standards & expectations. Karl, in addition to LMT-AT engineering, testing, sales and quality teams, continue to drive both innovation & performance without sacrificing on quality. * Why do LMT Defense & LMT AT test their products? – LMT brand companies test products to ensure LMT product perform to the highest standards due to a large military, law enforcement, and federal agency customer base and the high level of performance standards their respective organizations have in place to equip their men & women in the field with the respective product that won’t fail in service. In order to purchase products from the LMT brand, these groups require testing data be provided according to these objective standards or provide product to the group in order to perform an evaluation amongst a group of manufacturers in order to down select the manufacturer with the best performing product to go into service. -To learn more about why LMT brand companies test their product, visit our LMT-AT Testing Standard (LATTS) webpage * How does LMT-AT conduct its testing? – LMT-AT tests its products in the shared LMT facility with some of the best testing engineers using the top-quality equipment to test on the highest US military or North Atlantic Treaty Organization (NATO). A lists of these standards used by LMT, what the tests measure or evaluate, the equipment required to perform the test, and how the tests are held to the same objective standards to produce a 100% apples-to-apples comparison can be found on the LMT Advanced Technologies Testing Standard (LATTS) page. -To learn more about how LMT brand companies test their product, visit our LMT-AT Testing Standard (LATTS) webpage * How does the level of testing LMT companies perform on their products benefit me as a commercial user? – The everyday consumer directly benefits from professional-grade reliability, durability, and performance — right out of the box by providing: – No need to self-test for reliability or if a product will work when you need it to – Equipment designed to survive conditions far harsher than standard civilian use, from extreme temperatures to high and aggressive firing cadences to use in dust, mud, and sand – Consistent product performance under the harshest conditions ensuring product durability – Longer service life – Lower lifetime cost – Professional-grade precision reiterated for civilian use – Repeatable point-of-impact – Consistent back-pressure and gas management – Stable performance across weapon systems, ammo types, and conditions – Trust through transparency and proven data – Assurance that performance claims are validated—not exaggerated – Confidence you purchase is grounded in real testing, not hype – Access to an enhanced version of the same quality product trusted by professionals – Iterated design, same precision engineering under the high standard military testing lineage * Can I order any of these AT products directly as a commercial customer? – Yes, you can order all LMT-AT products as a commercial customer, however, for orders for suppressor products there are some additional requirements – All non-suppressor products are available directly on our webstore, through local gun stores that stock our products which can be found on the LMT-AT ‘Dealers’ webpage, or through our stocking partners that have eCommerce websites which can also be found on the LMT-AT ‘Dealers’ webpage. – Suppressor products require being a resident in one of the 42 states which allow for suppressor ownership, be legally eligible to purchase a firearm, be at least 21 years of age and pass a BATFE background check – When submitting your paperwork to the ATF you must also have a valid ID in the state in which you are purchasing the suppressor in, submit fingerprints with your ATF Form 4 (5320.4) via the FD-258 Fingerprint Card, and two passport style photos of yourself * Do I need a special license to own a suppressor? – Yes, an approved Form 4 (5320.4) is required in order to own a suppressor, however, the cost to do so has dropped down to $0 as of January 1, 2026 and the time and process to submit your ATF Form 4473 has become easier than ever! * What is a “tax stamp” and how does it relate to suppressor ownership? – A ‘tax stamp’ refers to the ATF Form 4 which authorizes legal ownership of a suppressor which acts as proof of registration and compliance with federal law, requiring a background check, fingerprints, and photographs * What are my options for purchasing an LMT suppressor? – LMT suppressors can be purchased online through our website, our stocking dealer’s physical locations (if nearby) or websites, or to your dealer of choice – Purchasing directly from website streamlines the buying process, by managing your NFA paperwork and allowing us to ship your LMT suppressor directly to your door through our fulfillment partner, Silencer Central. – More information on how LMT suppressors are fulfilled by Silencer Central can be found – here – LMT suppressor can also be purchased through one of our stocking dealers, which can be found on our Dealers page, either in store or through their respective website – Lastly LMT suppressors can also be shipped to a dealer of your choice by having the gun store send a scanned copy of their FFL & SOT license to sales@lmt-at.com * I don’t see AT product available through a local dealer close to me, now what? – All products are available for purchase directly through our website or through one of our stocking dealers – To see if there is a stocking dealer close to your respective area visit our Dealers webpage – If you would prefer to purchase the suppressor product through your local FFL which is not currently a stocking dealer, simply have the gun shop of your choosing send a scanned copy of their FFL & SOT to sales@lmt-at.com * Is there any third-party content available on the products? – Yes, navigate to the Reviews & Product Demos webpage of the AT webpage where you’ll find links to our products being tested or reviewed to hear and see the difference in our products. * What are the benefits of using a suppressor? – Noise reduction & hearing protection – Lower muzzle flash – Better communication ability – Wildlife preservation – Curtail concussive blast waves & brain damage * What are the benefits to using the LMT suppressor line specifically? – Accuracy: Industry-leading accuracy in terms of POI shift and reduction in muzzle rise – Durability: Industry-leading 30,000+ round service life & full-auto rating demonstrates LMT suppressors can handle the worst of conditions over a course of what for many would be a couple lifetimes worth of use – Modularity: Allows for customizable product to fine tune the system to user’s desired setup & cleaning at user level – Value: Top of the line accuracy & durability along with modular, low-blowback design allows for customizing your setup for each goal and mission’s performance goals to provide a high-performing product tested & validated to the highest standard of testing which will last most users a lifetime if not multiple of reliable, consistent use for a fair price. – Reduced blowback: Less repetitive stress to user’s joints, lower shooter fatigue, and providing shooters better control for follow-up shot accuracy – Elite sound reduction, especially at the shooter’s ear – Comfortable shooting experience: Reduced blowback design helps keep gas away from the operator instead of near the user’s face which can cause consistent discomfort – Construction: Quality craftsmanship produced subtractively allows for a product built of multiple materials giving users the best balance of weight and performance while ensuring a long service life without the limitations imposed by printable powders or laser fusion behavior. – Tighter Tolerances: CNC machining excels at ultra-tight tolerances, surface finish quality, and concentricity—critical for accuracy, minimized POI shift, and repeatable suppressor performance. – Quality control: CNC machining allows for higher number of quality checks done throughout the manufacturing established process to ensure every part is consistent, batch to batch – Reliability: Tested under the most rigorous testing standards and environmental conditions, the consumer receives a product that is proven and ready for anything—before it ever leaves the factory. – Enhanced flash reduction – Ability to command and control & communicate with range goers or unit members – Diminish environmental disruption of dirt and debris kick up * What is the service life of the ION suppressors? – For aggressive, full-auto firing schedules the LMT suppressor product line will last at least the life of the barrel – For more varied and less aggressive firing cadences, LMT suppressor products provide an industry-leading 30,000 round (with regular cleaning & maintenance) service life * Are the LMT-AT suppressors full auto rated? – Yes, all LMT-AT suppressors are full auto rated according to the US SOCOM Table II Stress Test Firing Schedule of 240 rounds fired over a varied firing cadence for a minimum of six (240 round) cycles or maximum of 20 (240 round) cycles. US SOCOM Table II firing cadence is as follows for a 30-round magazine: – Mag 1: 1 round/second – Mag 2: 2 rounds/second – Mag 3: 1 round/second – Mag 4: 3-5 round burst – Mag 5: 1 round/second – Mag 6: 2 round/second – Mag 7: 1 round/second – Mag 8: 30 round continuous burst – *Allow to cool to conclude cycle * Are these reduced blow back or flow-thru suppressors? – Yes, all LMT-AT suppressors are designed to reduce backpressure felt to the operator providing better control & follow-up shot accuracy, provide a better shooting experience by lower gas felt at shooter’s face, and limit impact felt to user’s joints. – The rifle caliber suppressor design was iterated from the LINK 30, our M240B/L belt-fed suppressor. Helping lay the foundation for the ION suppressor product line to be the industry-leader in durability and accuracy while significantly reduce back pressure felt by the operator. * Can I use one ION suppressor for multiple calibers? – Yes, LMT suppressors can be used for multiple calibers. The caliber rating for each suppressor varies by model so we recommend looking at the respective product page for the suppressor to understand the usage windows. * What are barrel length restrictions? – Barrel length restrictions are limits set by a manufacturer to ensure the device can handle the pressure, heat, and velocity experienced at different barrel lengths. LMT-AT Suppressor do not have barrel length restrictions. * Are there any barrel length restrictions with LMT-AT suppressors? – No, ION suppressors have no barrel length restrictions. * What are ‘QD’, Xeno™, ‘HUB’ mounting systems and why does the ION suppressor use them? – QD: stands for quick detach, meaning the mount is designed to be rapidly attached or removed using a muzzle device rather than attaching directly to the rifle barrel – Xeno™: A mounting system developed by Dead Air featuring a taper mount, left-handed thread to prevent unintentional removal – HUB: mounting system where a suppressor features a standardized 1.375×24 or 5/8×24 threads per inch allowing for use of various interchangeable mount, direct thread adapters, and muzzle devices – To learn more about the LMT-AT mounting system, see our Fitment Guide webpage. * Are LMT-AT products ‘HUB’ / Xeno™ compatible? – Yes, LMT-AT products are HUB and Xeno™ compatible. – To learn more about the LMT-AT HUB & Xeno™ compatible mounting system see our Fitment Guide webpage. * What muzzle devices or mounting system work with the ION suppressors? – Any Xeno™ or HUB style muzzle device or mounting system that utilizes the HUB (1.375” x24) thread on the external diameter/thread, like our own HUB base mount, are compatible with AT suppressors. This includes HUB adapters for 3rd party mounting systems like the KeyMo mounting system. LMT AT produces direct thread inserts (in 1/2×28 & 5/8×24) but other manufacturers direct thread inserts are also compatible assuming their outer, external thread is HUB compatible. – To learn more about the LMT-AT HUB & Xeno™ compatible mounting system, see our Fitment Guide webpage. * How do the LMT AT muzzle devices work with ION suppressors and other manufacturers suppressors? – AT muzzle devices use a taper lock gas seal, which in combination with AT suppressors or other manufacturer’s suppressors using the LMT-AT ‘HUB’ compatible mount adaptor for their suppressor, provides a tight & secure seal for keeping gas chambered and ultimately moving forward through our reduced blow back design to reduce gas blowback, sound, flash, etc. – Additionally, all AT suppressors are able to mount onto any AT muzzle device regardless of the caliber specific (1/2×28 or 5/8×24), internal thread of the AT muzzle device. – AT muzzle devices also work with any other manufacturer’s suppressor with the corresponding base thread to the AT muzzle device (either 1/2×28 or 5/8×24 thread). – To learn more about how LMT-AT muzzle devices work with HUB & Xeno™ compatible mounting systems, see our Fitment Guide webpage. * Are AT products modular/customizable? – Yes, LMT-AT products are designed to be modular which allows the user to customize the suppressor system based on their desired performance matrix. Users can swap out the interchangeable bases or end caps based on flash, blowback, sound, weight, length and other performance characteristics of their choosing. This modularity also allows persons to have the ability to clean at the user level to extend the product’s service life and improve performance. * Is the LMT-AT product line user serviceable for cleaning and maintenance? – Yes, ION suppressors are user serviceable. Simply remove the base and the endcap and let weldment sit in CLR for a few hours to remove carbon. Allowing for quick and easy cleaning and use within a few hours once the product has dried. – For more information on cleaning & maintenance, please visit the respective product manual found in the “Resources” tab. * What is the prescribed cleaning/maintenance schedule of the AT products? – The ION line is meant to be durable and be run dirty, but the more the products are cleaned the better they work. AT recommends cleaning the suppressor every 3,000 to 4,000 rounds for optimal performance. – For more information on cleaning & maintenance, please visit the respective product manual found in the “Resources” tab. * Can I take apart the LMT suppressor weldment? – No, LMT-AT produces its suppressors so that the actual suppressor weldment can not be tampered with. Due to our defense background & customer base, it’s important for the suppressors (both military & commercial) to remain in one piece according to our manufacturing standards so no person unknowingly makes the product un-serviceable. However, the ‘HUB’ base and endcap are removeable, allowing for user serviceability but also modularity to switch out mounting and end caps. – For more information on ION suppressor maintenance, please visit the respective product manual found in the “Resources” tab. * What material are the ION suppressors made of? – ION suppressors are made of either a combination of Inconel & Stainless Steel (ION K and ION 30 models) or Inconel & Titanium (ION LT model). * Have heard about other products getting carbon lock, is that something to expect with these ION suppressors? – No, LMT AT muzzle devices utilize a taper lock gas seal to prevent gas leakage, which creates more sound pressure/waves and leads to carbon lock, to provide a better seal for keeping gas chambered and ultimately moving forward to reduce gas pressure and sound to the operator and firearm. – Only at very high and aggressive firing schedules could one expect some level of carbon lock. Outside of using a high-temperature threadlocker for this firing schedule is recommended to remove the threadlocker by submerging the secured part in boiling water for several minute to soften the adhesion and using the IONTOOL or hand tools to loosen the assembly while still hot. * What comes/ships with the ION products? – All LMT AT suppressors ship with the regulator mount adaptor base and respective end cap torqued to the weldment along with a single port break (either in 1/2×28 or 5/8×24 thread), durable ION multi-tool, stickers, and a thank you card linking to the product manual. * Are timing shims or washers required for installation of AT products? – Timing shims or washers are not required for proper installation but may help seat the suppressor better depending on the muzzle device or mount used. – All AT muzzle devices, however, ship with timing shims included. * Is a high temperature threadlocker required for use with LMT AT products? – No, a high temperature threadlocker is not required for ION suppressors but it is recommended for users that run aggressive firing schedules or extreme heat cycles to use a high temperature threadlocker like Rocksett or Hot Lock after degreasing the threads. – More information on product use in high-temperature environments or in aggressive firing schedules, please visit the respective product manual found in the “Resources” tab. * Where and how are the ION suppressors produced? – Where: LMT suppressors are 100% made in the U.S.A. in the shared LMT facility in Eldridge, Iowa alongside all LMT products. – How: Due to LMT AT’s customer portfolio including both commercial and military/law enforcement, AT products are produced in our tried-and-true subtractive method or through CNC machining, providing tight tolerances, precision finishes, product material versatility which enhances durability, high repeatability, and proven strength & material integrity. * Are the ION suppressors welded or sealed? – ION suppressors are finished with a laser weld finish. Not to be confused with the taper lock gas seal of the suppressor base threading which allows for better gas chambering and ultimately gas, sound, and flash mitigation through it’s reduced back pressure geometries in addition to the taper lock seal. * What ammunition is recommended for the ION suppressors? – Any ammunition that is within the specific ION suppressor’s caliber range is permissible. For background, LMT-AT uses M855 ammo for the majority of its testing. – See the respective product page for the ION suppressor in question’s caliber range. * Is there a warranty for LMT-AT products? – Yes, LMT-AT provides a lifetime warranty against all manufacturing defects and damages caused by the normal use of this product. – To learn more about the LMT-AT lifetime warranty, visit our Warranty, Refunds, & Returns webpage. * What are the warranty details? – LMT will repair or replace free of charge any suppressor manufactured by, or at the direction of, LMT Advanced Technologies, LLC. The product is sold “as is” with no further implied contractual rights or warranties beyond those expressly stated herein. The warranty does not apply to certain conditions or acts. It is at the sole discretion and determination of LMT Advanced Technologies, LLC if a particular defect or condition is covered by this warranty. – To learn more about the LMT-AT lifetime warranty, visit our Warranty, Refunds, & Returns webpage.
