CAT RAT Ti KIT (COVERT/FLOW) – 300BLK

The CAT RAT (Rattler) KIT is a purpose-built suppressor optimized for the compact .300 Blackout platform — specifically the SIG MCX Rattler with its 5.5″ barrel. This modular, 3D-printed titanium system gives shooters the flexibility to prioritize either low back pressure (FLOW module) or maximum suppression (COVERT module). Whether you’re running subsonic or supersonic ammo, the RAT system delivers serious capability in a compact footprint. It’s tailor-made for 300BLK SBR owners, and a must-have for anyone running short-barreled, high-performance blackout builds. The CAT RAT mounts using the popular 16×1 LH pattern QD mounts, for secure lockup and excellent accuracy. The CAT RAT Kit comes with both modules, allowing the end user to prioritize performance, based on the mission at hand.
 
 FEATURES AND BENEFITS OF THE CAT RAT 
Modular Titanium Design – Choose between two second-stage modules (FLOW or COVERT) for custom-tuned suppression and performance. 
Optimized for 300BLK SBRs– Designed around the Sig Rattler’s short barrel, this suppressor thrives on compact blackout builds. 
A-PULSE Tech – CAT’s advanced baffle tech ensures optimal flow, pressure, and performance from 1,000 to 2,200 FPS. 
QD Mount Ready – Works with and includes SIG taper and AI Nano mounts via 5/8×24 threading, giving you easy, rock-solid attachment. 
Lightweight, Full-Titanium Construction – 3D-printed from Ti64 and finished in durable DLC, the RAT is built for hard use without weighing you down. 
Technical Specifications: 
CAT RAT – FLOW Variant 
Length: 7.53″ (Base 4.04″ + Flow Extension 3.49″) 
Diameter: 1.70″ 
Weight: 13.5 oz (Base 7.1 oz + Flow Extension 6.4 oz) 
Build Material: 3D-Printed Titanium (Ti64) 
Finish: Diamond-Like Carbon (DLC) 
CAT RAT – COVERT Variant 
Length: 7.34″ (Base 4.04″ + Covert Extension 3.30″) 
Diameter: 1.70″ 
Weight: 12.8 oz (Base 7.1 oz + Covert Extension 5.7 oz) 
Build Material: 3D-Printed Titanium (Ti64) 
Finish: Diamond-Like Carbon (DLC) 
HOW TO BUY THE CAT RAT Ti KIT WITH SILENCER SHOP 
Add the CAT RAT KIT to your cart. Make sure to include two tax stamps and Single Shot Trusts if applicable. The Gun 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.