SKU: 11358821982

Otis Technology Defender Series Cleaning Kit

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Description

Otis Technology Defender Series Cleaning KitOverview of the Otis Technology Defender Series Cleaning Kit FG 901 The Otis Technology Defender Series Cleaning Kit is a caliber matched firearm maintenance system built for professionals who cannot afford to have a dirty weapon in the field. Available in nine distinct caliber configurations under the FG 901 model family, each kit is engineered to match the bore diameter, brush size, and cable length to your specific firearm. Why it matters: Carbon,

Overview of the Otis Technology Defender Series Cleaning Kit | FG-901

The Otis Technology Defender Series Cleaning Kit is a caliber-matched firearm maintenance system built for professionals who cannot afford to have a dirty weapon in the field. Available in nine distinct caliber configurations under the FG-901 model family, each kit is engineered to match the bore diameter, brush size, and cable length to your specific firearm.

Why it matters: Carbon, copper fouling, and lead deposits accumulate with every round fired. Over time, they compromise accuracy, increase wear, and in worst-case scenarios, cause malfunctions. This kit gives law enforcement officers, military personnel, and first responders the tools to clean properly and quickly, whether between range qualifications or after a deployment.

Three cleaning methods are built in:

  • Quick one-pass clean with the caliber-specific Ripcord pull-through bore cleaner
  • Full breakdown cleaning using Memory-Flex aircraft-grade cables and solid sectional rods
  • Breech-to-Muzzle precision cleaning following the natural direction of bullet travel

Everything packs into a compact nylon case, keeping your cleaning supplies organized and ready wherever duty takes you. Manufactured in the USA and backed by the Otis Technology No Nonsense Warranty, the FG-901 series is trusted by agencies and armorers nationwide.


Key Features

  • Caliber-Specific Design: Each kit is matched to a specific caliber, ensuring the bore brushes, Ripcord, patches, and cables are correct for your firearm from the moment you open the case
  • Memory-Flex Aircraft-Grade Cable: The 30 in. flexible cable conforms to any bore geometry and attaches to brushes, slotted tips, or obstruction removers via a standard 8-32 threaded end; pistol cables include an affixed slotted tip
  • Ripcord Pull-Through Bore Cleaner: A single-pass pull delivers a complete bore clean in seconds; ideal for field use between stages or after light range sessions
  • Caliber-Specific Bronze Bore Brushes: Feature a Tufcor corrosion-resistant core wire with twice the bristle fill of standard brushes; caliber size is marked on the brush stem for easy identification; rifle kits also include chamber brushes
  • 100% Cotton Cleaning Patches: Included in 2 in. and 3 in. sizes (10 each in rifle kits) for thorough wipe-down at every pass
  • Patch Savers and Slotted Tips: Small and large slotted tips secure patches in the bore without slipping; Patch Savers keep patches seated and ensure 360-degree bore coverage
  • Blue Nylon All-Purpose Brush: Scrubs carbon and powder residue from surfaces, controls, and hard-to-reach areas without scratching finish
  • 8-32 Threaded Solid Rod Set: Included in rifle configurations for traditional rod-based cleaning alongside the cable method
  • Shooter's Choice FP-10 Lubricant Elite CLP (0.5 fl. oz.): A professional-grade cleaner, lubricant, and protectant included in every kit; helps prevent corrosion and extend service life
  • Step-by-Step Instruction Manual: Included in every kit; covers all three cleaning methods in plain language
  • Compact Nylon Case: All items organize into a soft pack nylon case; pistol kits measure approximately 10 in. H x 3.63 in. W x 1.5 in. D; standard rifle kits measure approximately 10 in. x 4 in. x 2 in.; larger rifle kits (.338 and .50 cal) measure approximately 11 in. H x 8.13 in. W x 2.63 in. D
  • No Nonsense Warranty: Otis Technology's limited lifetime warranty covers defects in materials and workmanship
  • Made in the USA

Specifications

Brand Otis Technology
Product Line Defender Series
MPN (Series) FG-901 (see variant table below for individual MPNs)
Color Black
Material 100% cotton patches; aircraft-grade Memory-Flex cable; bronze bore brushes (Tufcor core)
Case Type Nylon soft pack with organizer
Dimensions (pistol kits) 10 in. H x 3.63 in. W x 1.5 in. D
Dimensions (standard rifle kits) 10 in. x 4 in. x 2 in.
Dimensions (.338 and .50 cal kits) 11 in. H x 8.13 in. W x 2.63 in. D
Country of Origin Made in USA
Warranty No Nonsense (Limited Lifetime)

Variant SKUs, MPNs, and UPCs

Variant (Caliber) SKU MPN UPC
.38/9mm OTIS-FG-901-9MM FG-901-9MM 014895004708
.40 cal OTIS-FG-901-40 FG-901-40 014895004715
.45 cal OTIS-FG-901-45 FG-901-45 014895004722
.223/.45 OTIS-FG-901-5545 FG-901-5545 014895004760
.223/5.56mm OTIS-FG-901-556 FG-901-556 014895004746
.308/7.62 OTIS-FG-901-762 FG-901-762 014895004739
.338 cal OTIS-FG-901-338 FG-901-338 014895006566
.50 cal OTIS-FG-901-550 FG-901-550 014895006580
5.56mm/7.62mm OTIS-FG-901-5576 FG-901-5576 014895004685

Compatibility

The Defender Series FG-901 line covers a wide range of popular service and sporting calibers. Select the configuration that matches your primary firearm:

  • .38 cal / 9mm (FG-901-9MM): Fits all 9mm pistols, 9mm PCCs, .38 Special, and .357 Magnum revolvers
  • .40 cal (FG-901-40): Fits .40 S&W pistols and similar bore diameters
  • .45 cal (FG-901-45): Fits .45 ACP, .45 Colt, and similar bore diameters
  • .223 cal / 5.56mm (FG-901-556): Fits AR-15 pattern rifles, bolt-action, and other .223/5.56mm platforms
  • .308 cal / 7.62mm (FG-901-762): Fits .308 Winchester, 7.62x51mm NATO, and 300 Blackout rifles
  • .223/.45 dual-caliber (FG-901-5545): Cleans both a .223/5.56mm rifle and a .45 cal pistol with a single kit
  • 5.56mm/7.62mm dual-caliber (FG-901-5576): Cleans both .223/5.56mm and .308/7.62mm rifles
  • .338 cal (FG-901-338): Fits .338 Lapua Magnum, .338 Norma Magnum, and 8.6mm Blackout rifles
  • .50 cal (FG-901-550): Fits .50 BMG and other .50 caliber rifle platforms

Limitations: These are caliber-specific kits, not universal kits. Selecting the wrong caliber will result in brushes that do not contact the bore correctly. Shotguns are not covered by any variant in this product family; Otis Technology offers separate shotgun-specific cleaning kits for 12, 20, and .410 gauge platforms.


Intended Users

The Otis Technology Defender Series Cleaning Kit is designed for anyone whose life or livelihood depends on a reliable firearm.

Law enforcement officers benefit from the three-method approach: a Ripcord pass during a shift, a cable clean after qualification, and a full sectional rod breakdown at the armory. The compact case fits in a range bag, a locker, or the back of a patrol vehicle without taking up meaningful space.

Active-duty military members and veterans will recognize the Breech-to-Muzzle cleaning philosophy, which mirrors training doctrine used by U.S. armed forces. Otis Technology has long supplied cleaning systems to military units, and the FG-901 civilian version delivers the same core technology.

Competitive and recreational shooters who put high round counts downrange appreciate caliber-specific bronze brushes that actually fit the bore, cotton patches that hold up pass after pass, and FP-10 CLP lubricant that protects the action without attracting dust.

Security professionals and corrections officers who qualify regularly and need to maintain issued or personally owned firearms on a tight schedule will find the single-pass Ripcord method fast enough to complete between duties.

Gun collectors and enthusiasts can keep multiple firearms in service condition without buying separate universal kits that compromise on brush sizing.


What's Included

Every Otis Technology Defender Series Cleaning Kit includes the following (specific items vary slightly by caliber configuration; rifle kits include chamber brushes and solid rod sections not found in pistol kits):

  • Caliber-specific Ripcord pull-through bore cleaner (1)
  • 30 in. aircraft-grade Memory-Flex cable (rifle kits) or pistol-length cable with affixed slotted tip (pistol kits)
  • Caliber-specific bronze bore brushes (quantity varies by kit)
  • 100% cotton cleaning patches (2 in. and 3 in. sizes, 10 each in rifle kits)
  • Small and large slotted tips
  • Patch Savers
  • Blue nylon all-purpose brush (1)
  • Chamber brushes (rifle kits only)
  • 8-32 thread solid rod set (rifle kits only)
  • Shooter's Choice FP-10 Lubricant Elite CLP, 0.5 fl. oz. (1 bottle)
  • Step-by-step instruction manual (1)
  • Nylon soft pack organizer case (1)

Note: No additional solvents or patches are required for basic cleaning. For extended service or heavier fouling, supplemental Otis cleaning chemicals and patches are sold separately.


Available at WCUniforms

WCUniforms is a law enforcement, military veteran, and EMT-owned specialty retailer serving public safety professionals and the civilian communities that support them. The Otis Technology Defender Series Cleaning Kit (FG-901) is stocked as part of our core gun care catalog because the brands and tools carried here are ones our team would trust in the field. Unlike mass-market retailers that carry generic universal kits, WCUniforms focuses on caliber-matched, professional-grade products that actually match the firearms carried on duty. Shop the full Otis Technology lineup and all nine FG-901 caliber configurations at wcuniforms.com.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 11358821982

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Jt
Fort Morgan, US
★★★★★ 5
Great for heavy duty chewers
Flavor Name: Steak, Size: Medium
Our two dogs love these bones. They’re very durable for heavy duty chewers and it takes them a fairly good time to get through them. They must love the taste because it’s the bone they first pick up. I’ve gotten two flavors so far, beef and the peanut butter. Our dogs love them and because of that so do we.
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Reviewed in the United States on April 23, 2026
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Laura
Waukegan, US
★★★★★ 4
Seems great, but not for my lab
Flavor Name: Bacon, Size: Medium, Flavor Name: Bacon, Size: Medium
I am rating this, to some degree, from a hypothetical standpoint. It SEEMS like a great bone. It SEEMS like it will last quite a while and withstand some avid chewers. However, I can't say for certain because it just wasn't well-loved by my Black Lab. She has a penchant for chewing animal bones. She loves to find wildlife bones in our yard and munch on them, so we do our best to provide healthy chewing options in the house. She will go to town on a cow's joint and even enjoys a peanut butter filled Kong from time to time, but this bone just didn't meet her expectations. It's not a bad bone. It has a very rugged feel and seems like it would be safe if bits and pieces were to begin coming off, like they're safely edible. I guess (and I can't say for sure..) it just doesn't have as much of a meaty flavor as many dog's like. If your pup is a Nylabone chewer- or likes to chow down on your loafers- this bone may be a perfect new addition to his/her toy bin.
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Reviewed in the United States on July 10, 2020
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Amy
Alexandria, US
★★★★★ 5
Bone for destroyers
Flavor Name: Bacon, Size: Small
4 months ago I Bought this bone for my 90lb lab who destroys all his bones, but not this one! It barely has any teeth/chew marks on it and it’s one of his favorites. It was a great find and I’ll be sure to buy again. If you have a dog that destroys bones I’d give this one a try.
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Reviewed in the United States on April 16, 2026
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DSW
Lowell, US
★★★★★ 5
Immediate Doggy Happiness!
Flavor Name: Bacon, Size: Medium
Great dog bones! These are a nice size for my 55-pound Aussie, as well as our 96-pound Alaskan Shepherd. They are big enough to last for a while, and big enough to see so that I don't step on them with my bare feet; part of this is that they stick up off the floor a bit, instead of being a flat bone, all in one plane.
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Reviewed in the United States on May 17, 2026
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Lulu13
Lexington, US
★★★★★ 3
Nice size, the quality is changing. It is softer I believe than it used to be.
Flavor Name: Peanut Butter, Size: Large, Flavor Name: Peanut Butter, Size: Large
Not sure if something has changed in the way this product "Barkbone" is made. I bought this many times before and it lasted. Today, on my dogs first day of use, he had chipped through the material, and already destroying it. he has had it for less than 3 hours.
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Reviewed in the United States on September 29, 2025

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