CAT WB 718: SURGE BYPASS-Powered Inconel Suppression for 5.56
The CAT WB 718, affectionately dubbed “White Bread”, brings innovation and resilience to your 5.56 setup. It’s built around the patented SURGE BYPASS pressure system, which directs gas more efficiently to reduce sound, recoil, and pressure wave signature. Whether you’re chasing split times or dialing in for stealth, this suppressor delivers noticeable shooter comfort in a compact footprint.
Crafted from Inconel 718 and finished in DLC, the WB 718 thrives in brutal environments. Its durability makes it ideal for full-send shooting days, fast strings of fire, and long-term abuse on AR platforms. Internally, DMLS structuring helps optimize high-frequency sound suppression for a quieter experience on both ends of the barrel.
Offered in two mounting styles, the WB 718 gives you flexibility:
The 1.375×24 HUB option includes a 1/2×28 direct-thread adapter for universal compatibility.
The 1×16 LH QD version uses CAT’s proprietary Spooky 1 interface for dedicated setups.
KEY FEATURES AND BENEFITS:
SURGE BYPASS Tech: Controls gas flow to reduce recoil and blast pressure
High-Frequency Suppression: Optimized for tone and comfort
Inconel 718 Construction: Withstands heat, corrosion, and hard use
Mounting Options: Choose between HUB (1.375×24) or CAT QD (1×16 LH)
DLC Finish: Durable and slick surface treatment for longevity
Field-Proven Durability: Built to take abuse from duty cycles and training days
Technical Specifications:
Weight: 14.6 oz(HUB), 16.1 oz(QD)
Length: 5.46″ (HUB), 5.80″ (QD)
Diameter: 1.6″
Thread Options: 1.375×24 (HUB) or 1×16 LH (QD)
Mount: 1/2×28 DT Adapter (HUB) or 1/2×28 Muzzle Device (QD)
Material: Inconel 718
Finish: DLC
What’s in the Box:
CAT WB 718 Suppressor
1/2×28 DT Adapter (HUB) or 1/2×28 Muzzle Device (QD)
Owners Manual
How to Buy The CAT WB 718 Suppressor with Silencer Shop
Add the CAT WB 718 to your cart. Make sure to include a tax stamp and a Single Shot Trust if applicable. The Single Shot Trust makes it easy to add friends and family as additional users of the suppressor.
Head to your selected Powered By Silencer Shop dealer with a kiosk to complete your demographic and fingerprint scan in just five minutes. Snap a selfie and upload it online within your customer portal with the Silencer Shop app.
Silencer Shop will email a DocuSign to you. Please review and digitally sign the file from your computer or mobile device.
Set up your ATF eForms account at eforms.atf.gov. Make sure your email, name, and address match your Silencer Shop profile information exactly.
You’ll receive an email from Silencer Shop that says “Ready to Certify” and includes the phone number of your local Powered by Silencer Shop dealer. Set up a time to certify with your dealer and submit the form to the ATF for processing.
19 reviews for CAT WB 718
Only logged in customers who have purchased this product may leave a review.
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Justin H –
This can is seriously incredible. You don’t realize how small it is until you see it in person. Prior to this, a Helios QD was my “do it all 556 can”. The WB Inconel blows it away. No noticeable gas blowback, twice as quiet, half the weight, and shorter as well. Worth every penny.
Alan Johnson –
Geat sounding can, make sure to go with the inconel version even if you don’t plan on shooting much.
Zachary L –
CAT is the future
Blake J –
The WB absolutely rules. Pewscience data tells you everything to know. If it weren’t for the supersonic crack, this thing would be movie-quiet. Gas to the face is also a non-issue. I will definitely be adding more CAT cans to the collection.
Jordan T –
The suppressor is a little expensive but definitely worth it
Jesse R –
I have the CAT WB on a 11.5in DD and the huxwrks 762 flow on my 18in DD. The WB on the 11in is significantly quieter to my ear than the flow. No noticeable increase in back pressure at all. CAT makes the best suppressors in my opinion. I already bought a JL for my 308 because their product is superior and I don’t feel the need to try new brands.
Anthony Tran –
Better than expected. Worth every penny.
Joseph K –
Great can for 556. Light, short, quiet.
Jonathan C –
Best 556 can I have ever used. I am shooting it on an m16 lower, PWS Alpha LT upper. On a full mag dump using several other suppressors I usually get a lot of gas in the face. ZERO gas using this can and its as quiet as any other long can I have used. No discernible first round pop either. If you want a 556 can buy this one.
Eric C –
The WB is a very impressive can. Well made and sounds great. Shot on a 11.5 BCM and it would be even quieter on a 16.
Stephen W –
cat more like goat
Kolton M –
SS outfitters handled everything and made it super easy to get what i wanted. Silencer shop systems have made this a painless and quick experience. I was well informed throughout the timeline, couldnt ask for more.
Stephen Doran –
Small amazing suppressor
Cameron B –
This is my 3rd 5.56 & 1st low back pressure can, my first 2 were a Rc2 and polo k.
I am using a Ecco machine plan b hub mount with it.
I am very happy with its performance in regards to its sound signature, gas and flash reduction. It’s slightly heavier than my polo k and much shorter than my Rc2. It’s my new favorite between the 3 5.56 can I have.
Nicholas F –
Very quality can. 718 is the way to go. It locks up well on the flash hider but I do check it every few mags. Good sound suppression and little to no flash at all.
Dalton P –
This is probably the best 556 K can available in the market in my opinion. The size and profile mixed with the sound signature as well as it being a flow through can really just checks all the boxes
Chandler T –
Can is absolutely awesome! I’ve found that ejaculating in the baffle system actually completely eliminates first round pop, and burns off very quickly!
Adam D –
Extremely pleased with this purchase. Great value with the free tax stamp promotion, and can’t recommend the CAT WB enough. Fantastic performance, and delivers a great shooting experience using the surge bypass low back pressure system.
Tyler S –
Extremely happy with the White Bread. My fourth can, sound reduction is awesome and on par with my AEM5 but 3-ish inches shorter and 6-ish ounces lighter (but with different use cases, of course). For me it’s unnoticeable on my 11.5” carbine in move and shoot. Also my first 3D printed can, it was surprisingly rough looking but performance is what matters. I did my research and glad I chose this one for a dedicated 556 can.