Built as the smallest rifle in the Vector series, the KRISS Vector SBR Gen 3 10mm in Alpine White pairs a 5.5-inch 10mm barrel with a Alpine White finish (KRISS part no. KV103SAP00). KRISS’s patented Super V system redirects blowback energy downward, and the barrel sits below the fire control group for what KRISS calls the lowest bore axis of any firearm in the world. The third generation adds an upper that works with aftermarket pistol grips and a lower housing reshaped for a better hold. It feeds from full-size Glock magazines and ships with one 33-round magazine, which makes it a natural home-defense carbine or a short, quiet suppressor host. The 10mm chambering gives this little rifle real authority for a pistol cartridge.

Key Specifications

• The chambering is 10mm, a hard-hitting magnum pistol round.
• Barrel length is 5.5 inches (139.7 mm), short enough to keep the whole rifle handy indoors.
• The stock is the KRISS ambidextrous telescopic folding stock, which adjusts for length and folds for storage.
• The muzzle is threaded 9/16×24 RH, ready for a compatible muzzle device or suppressor.
• The twist rate is 1:10, a rate that stabilizes common 10mm bullet weights.
• The barrel is 4140 chrome moly steel, a tough alloy for long service life.
• Barrel finish is black nitride (QPQ), a hard surface treatment that resists wear and corrosion.
• It ships with one 33-round magazine and takes full-size Glock magazines.
• The trigger is a pivoting, single-stage design with a clean, consistent pull.
• The rifle wears a Alpine white finish, a light color that stands apart from black rifles.

Frequently Asked Questions

Is the Alpine White version mechanically the same as the black one? Yes. KRISS lists the same barrel, stock, trigger and operating system for every Gen 3 SBR color; only the finish changes.

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 short-barreled rifles. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply. Taking an SBR across state lines still requires an approved ATF Form 5320.20.

Can I mount a suppressor? Yes. The barrel is threaded 9/16×24 RH, so a 10mm suppressor or muzzle device with that thread pitch mounts directly.

Buy the KRISS Vector SBR Gen 3 10mm 5.5-Inch, Alpine White

As of October 9, 2026, this short-barreled rifle 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. Order through KRISS‘s short-barreled rifles lineup and our Lubbock, Texas team will handle the transfer, and it ships fast to your Class 3 dealer.