Welcome to K-Factor Supply Co.

Named for the blast overpressure formula that tells you how far back to stand when things might go sideways, K-Factor Supply Co. started with a simple idea: make gear that bomb techs would actually want to wear. We're a 100% veteran-owned company, and while our roots are deep in EOD culture, we've expanded to honor both today's warriors and yesterday's heroes—serving EOD techs, military veterans, public safety professionals, and the families who stand by them all. From military heritage designs to unit swag, technical humor, and everyday gear with attitude, we create apparel and accessories that speak the language of those who've been there. Veteran owned. Authentically designed. Service driven. Got a question or need custom unit orders? Let's talk!

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New Limited KFSC Halloween Release

#MonsterSquadGoals


Werewolves, vampires, mil-spec tech and IEDs — all the things that go bump in the night, now in one place. Grab something from our limited Halloween collection before it vanishes like a ghost in the fog...

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New Arrivals

Check out what we've been working on lately!

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Tough Phone Cases are Here!


Built for impact and designed to stand out, these two-part shock-resistant cases deliver rugged protection without sacrificing clean, bold style. Whether you’re in the shop, on the range, or off the clock, these things will keep your device mission-ready and looking good.

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Now Available: Catastrophic Industries Speakers!

We're proud to carry gear from a fellow veteran-owned brand that builds it right.

These Bluetooth Speakers deliver explosive 30-watt sound in compact, waterproof, military-inspired designs. Built for durability, travel, and performance — this is field-ready audio with serious punch.


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We are an INERTmugs Authorized Retailer!

We’re proud to offer INERTmugs 14 oz and 20 oz tumblers — rugged stainless steel drinkware from a veteran-owned company, featuring bold designs inspired by real-world ordnance items. Double-wall insulation keeps your drink cold (or hot) whether you’re on the range, in the shop, or anywhere in between.

Check them out here!

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Best Sellers

Field tested and ready to be your new favorite!

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Need a little extra awesome in your life? We have Stickers!

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Fresh New Stickers

Buy 2, get one FREE!

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Proud to Serve!

As a verified Texas Veteran-Owned Business, we take pride in our commitment to both our country and our customers. We are honored to bring you high-quality, ethically sourced apparel, proudly serving those who appreciate craftsmanship and integrity. Thank you for supporting a veteran-owned business that values duty, honor, and customer satisfaction.

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Got questions? We've got answers!

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Customer Reviews

Overall rating: 4.4 / 5 from 618 reviews.

Customer photo review of Invasion Tough Magnetic iPhone Case

I’m extremely pleased with my purchase. The case provides excellent protection, all buttons and magnetic charging function. 100% and the graphics are superior quality.

Robert V. 5/5 Verified

Invasion Tough Magnetic iPhone Case

Customer photo review of M18A1 Claymore Gen 3 (Classic) Tough Android Case

Thought it was going to be more like the real claymore. Raised letters, kind of rough texture feel, raised lip, not smooth photo on a phone cover. Still good phone protector and looks pretty cool.,

Scotty H. 3/5 Verified

M18A1 Claymore Gen 3 (Classic) Tough Android Case

Customer photo review of M18A1 Claymore Gen 3 (ODG/Yellow) Tough Android Case

It says it is for a Samsung S24 Ultra. Either I got the wrong product or the size is cut too small. The product sent says it is for a Samsung S24 Ultra, but it isn't wide enough or long enough to fit my phone.

Max H. 1/5 Verified

M18A1 Claymore Gen 3 (ODG/Yellow) Tough Android Case

Store owner replied: Hi Max, we’re sorry to hear the case isn’t fitting your Samsung S24 Ultra properly. Could you please email us at customerservice@kfactorsupply.co with a photo of the case you received along with confirmation of your exact phone model? You’re covered by our 30-day quality guarantee, and we’d like the opportunity to take a look and make things right for you.

Customer photo review of M18A1 Claymore Gen 3 (ODG/Yellow) Tough Android Case

I was disappointed i thought the lettering and the edge would be raised but it's just painted on.

Slim S. 3/5 Verified

M18A1 Claymore Gen 3 (ODG/Yellow) Tough Android Case

Store owner replied: Thanks for sharing your feedback! We’re sorry the case wasn’t what you expected. We do try to make it clear on the product page that the Claymore design is 2D printed only with a 3D visual effect, so the lettering and edges aren’t actually raised or textured. We understand how the product photos could give a different impression, though, and we really appreciate you bringing this to our attention. Please email us at customerservice@kfactorsupply.co with your order details. Your order is covered by our 30-day money-back guarantee, and we’d be happy to help make things right.

Customer photo review of Bagram All-Inclusive T-Shirt

Comfortable fit and reminds me of my deployment as part of my career. Only thing I wish this design had was the "Parwan Province" that the other design has.

Mr W. 5/5 Verified

Bagram All-Inclusive T-Shirt

Customer photo review of Phantom (NMF) Tough Android Case

I was worried that the case might be cute but not fit or protect well. It fits my phone perfectly! Snug, secure fit. The graphic is crisp and clean and has not rubbed off after very active airshow days constantly pulling it in and out of my pocket. It represented itself well at OshKosh!

Kayleen A. 5/5 Verified

Phantom (NMF) Tough Android Case

Customer photo review of M18A1 Claymore Gen 3 (Dark ODG) Tough Android Case

Doesn't look like the pics at all. It appeared that the letters and edges were raised/embossed in the pics, turns out its literally just a picture that says front towards enemy on a phone case. It barely looks like a claymore which was the whole point. I feel ripped off.

Christopher C. 1/5 Verified

M18A1 Claymore Gen 3 (Dark ODG) Tough Android Case

Store owner replied: Hi Christopher , Thank you for sharing your thoughts. I’m truly sorry to hear that the case didn’t meet your expectations. That’s not the experience we want you to have. We always aim to clearly communicate that our cases feature 2D printed designs in both the product descriptions and on the product pages. Some designs, like the M18A1 Claymore case, are created to give the illusion of a 3D appearance, but they do not have raised, embossed, or textured elements unless specifically stated. That said, we completely understand that seeing and holding the case in person can feel different from how it appears online, and we're sorry for any disappointment this caused. Please know you're fully covered by our 30-day money-back guarantee. Simply contact our customer support team at customerservice@kfactorsupply.co, and we'll gladly make this right. Your satisfaction truly matters to us.

Customer photo review of Warhawk Tough Android Case

I actually think this is a good phone case, ive dropped it once already and it didnt even scratch. I'm really happy so far with my purchase.

Josh W. 5/5 Verified

Warhawk Tough Android Case

Customer photo review of M107 HE 155 Tough Magnetic iPhone Case

I got this case because it reminded me of the rounds I used to load into a cannon in a previous life. The case fits good, feels good in the hand, looks cool, and charges with magsafe with no problems.

Bryan T. 5/5

M107 HE 155 Tough Magnetic iPhone Case

Customer photo review of Invasion Tough Magnetic iPhone Case

I purchased the invasion stripe case for my iPhone 17 - arrived quick, fits perfectly and looks amazing! They also do custom work - reach out to ask. Glad to support a Veteran owned business who has passion for their work.

Gordon C. 5/5 Verified

Invasion Tough Magnetic iPhone Case

Customer photo review of Semtex Tough Android Case

Fit is perfect. Fabulous case with fabulous graphics. Ordering another one for my son. Probably not the best phone case for flying, lol.

Robert C. 5/5 Verified

Semtex Tough Android Case

Customer photo review of Retired AF Sticker

I have one on my Jeep, toolbox, and mug. Great design.

Kerry P. 5/5 Verified

Retired AF Sticker

Customer photo review of M18A1 Claymore Gen 3 (Dark ODG) Tough Magnetic iPhone Case

Guys at the gun shop love it! More importantly I love it! Gonna try to get a couple of friends to order and I plan on ordering a different one so I can change it uo every week or so! Great customer service and fast shipping is the icing on the cake.

Michael G. 5/5 Verified

M18A1 Claymore Gen 3 (Dark ODG) Tough Magnetic iPhone Case

Customer photo review of M18A1 Claymore Gen 3 (Classic) Tough Magnetic iPhone Case

Cheap as hell. It’s just a picture of what you wanted on a cheap plastic cover. Very disappointed. I was expecting more than a picture print.

Kevin B. 1/5 Verified

M18A1 Claymore Gen 3 (Classic) Tough Magnetic iPhone Case

Store owner replied: Hi Kevin,we’re really sorry to hear that you’re disappointed with your purchase, that’s definitely not the experience we want anyone to have. First off, you’re fully covered by our 30-day money-back guarantee. Just send our customer service team an email and they’ll take care of you right away. We truly want you to feel confident shopping with us, and if it wasn’t what you expected, we’ll absolutely work to make it right. We do our best to clearly mention that our cases feature 2D printed designs, both in the product description and on the Claymore case pages. That said, we completely understand how expectations can sometimes differ once you see the item in person. Your feedback is genuinely appreciated, and we take comments like yours seriously as we continue improving our products and communication. If you’re open to it, please reach out to our support team....we’d really value the opportunity to make this right for you.

Customer photo review of M18A1 Claymore Gen 3 (Dark ODG) Tough Magnetic iPhone Case

Just a touch slippery, maybe some grippy stippling on the edges . Otherwise love it !

Joffery J. 4/5 Verified

M18A1 Claymore Gen 3 (Dark ODG) Tough Magnetic iPhone Case

Store owner replied: Hi Joffery, Thank you so much for sharing your thoughts! We really appreciate you pointing that out. We’ve actually heard similar feedback from a few other customers, and insights like yours truly help us understand what we can improve or refine in future versions of our products. We genuinely value customer feedback because our goal is always to deliver the quality you expect and deserve. That’s why comments like this means a lot to us.And we’re absolutely thrilled to hear that you love the product overall ... that makes us so happy!

Customer photo review of M18A1 Claymore Tough Magnetic iPhone Case

Shame on you. It does not fit the phone I ordered it for. I put it on another, older phone and you cannot use the buttons for volume or on/off. Worthless. Design : just a picture of a claymore on a cheap piece of plastic. Unusable and waste of money. I want my money back!!!!

Matthew G. 1/5 Verified

M18A1 Claymore Tough Magnetic iPhone Case

Store owner replied: Hi Matthew, we're sorry you had these issues with the Gen 2 Claymore case. First off, you're covered by our 30-day money-back guarantee...just send customer service an email and they'll take care of you. That said, we try to make sure everyone knows our cases are 2D designs through both the product description and the special note on the Claymore case pages, but we understand your frustration. As far as fitment, we've never had a case not fit if it's the correct case on the correct phone, but customer support would be happy to troubleshoot this with you...just send us an email.

Customer photo review of Stud Muffin Tough Magnetic iPhone Case

Nice case! Feels thick enough to be protective, but not too heavy. Magnet works good and allows the phone to charge. Also accurately quantifies my current state😂.

Joshua S. 5/5 Verified

Stud Muffin Tough Magnetic iPhone Case

Customer photo review of M18A1 Claymore Tough Magnetic iPhone Case

The Print Quality and the font color are very good!👍I’d like 👍 the font to stand out and be more noticeable when holding the phone.I’d also add a notch along the edge to prevent the phone from slipping out of your hands if the case gets wet.And in the case gets wet.And in the next version, consider adding a shutter to cover the camera 📸. I Also recommend the manufacturer take a closer look at the Russian 🇷🇺 MON-50 mine design-it’s similar to the American M18 Claymore antipersonnel mine…Contact me for an idea,💡 dear friend!!!Always with respect 🫡 to you!

Seitumir A. 5/5 Verified

M18A1 Claymore Tough Magnetic iPhone Case

Customer photo review of Warhawk Tough Android Case

The artwork pops! very nicely printed, the rubber is snug to the phone does not come apart and not flimsy!

Hsiang C. 5/5 Verified

Warhawk Tough Android Case

I’ve been looking for something to represent the navy since my husband was in for 15 years and I love skulls so it was perfect. It’s a great case and yes, I have dropped it already. No issues. Also, thank you for your service! .

Victoria O. 5/5 Verified

Corsair - Jolly Rogers Tough Magnetic iPhone Case

super happy!!! ordered what i wanted, got it promptly and very happy with the product. I bot a cool phone cover and recieved it in just a couple of days. very happy with purchase and with the customer service i recieved.

Tony L. 5/5 Verified

Front Toward Enemy Sticker

Don’t fit tight

Gavin G. 3/5 Verified

M18A1 Claymore Gen 3 (ODG/Yellow) Tough Magnetic iPhone Case

Store owner replied: Hi Gavin, We’re sorry to hear that the case isn’t fitting as expected. We’d really appreciate the opportunity to look into this and make it right. Please email us at customerservice@kfactorsupply.co with your order details so we can investigate what may have happened and assist you further. Thank you!