The Radical Defense CS3 Compact Suppressor is a 7.62mm-rated can built for carbines, short-barreled rifles and precision platforms (Radical Defense part no. CS3). It is machined as a single monolithic body from Haynes 282 and uses Radical Defense’s Breathable Technology to stabilize gas pressure and cut blowback. At 5 inches long it keeps a short rifle handy, and the internal structure is built to resist implosion under hard use. It runs on a hub mount with a KFM flash hider threaded 5/8×24, so the can comes off without unthreading anything from the barrel. It is a compact multi-use can for the shooter who wants 7.62mm capability without a long tube.

Key Specifications

• The caliber rating is 7.62mm, which sets the largest cartridge class this can is built to handle.
• Length is 5 inches, short enough to keep a carbine or short-barreled rifle compact.
• Diameter is 1.78 inches, the tube size to check against your handguard and sight line.
• Weight is 18.5 ounces in this Haynes 282 build, the figure your rifle carries.
• The material is Haynes 282, a nickel-based superalloy chosen for heat tolerance under sustained fire.
• The finish is a proprietary infrared-suppressive, non-reflective coating that cuts visual and near-IR signature.
• Gas management is Breathable Technology, which stabilizes internal pressure and reduces blowback to the host weapon.
• The body is monolithic and salt-air resistant, built for harsh climates and prolonged use.
• The internal structure is implosion resistant, a design goal for combat and tactical use.
• The mount is a hub mount with a KFM flash hider threaded 5/8×24, so the can locks onto the flash hider rather than the barrel.

Frequently Asked Questions

What caliber is the CS3 rated for? Radical Defense rates the CS3 up to 7.62mm, and designs it for carbines, short-barreled rifles and precision platforms.

How long and how heavy is it? The CS3 is 5 inches long and 1.78 inches in diameter, and the Haynes 282 version weighs 18.5 ounces.

Do I need ATF approval to buy this? No. As of October 9, 2026, ATF no longer requires Form 4 approval, registration or a tax stamp for suppressors. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply.

Buy the Radical Defense CS3 Compact Suppressor, 7.62mm

As of October 9, 2026, this suppressor transfers on a Form 4473 with a background check at your Class 3 (SOT) dealer, with no Form 4 or tax stamp; state and local laws still apply. Put it on a rifle with a 5/8×24 muzzle and a KFM flash hider and it is ready to run. Order through Radical Defense‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will handle the transfer.