The Griffin Armament MK1 Patrol (brand part no. MK1PATROLWHG-W) is a .223 Wylde front-line-style carbine built around a forged upper and lower with Griffin’s Type III hardcoat anodized finish and anti-rotation tabbed rail lock-up. Its 14.5-inch 416R HEDP stainless barrel falls under the federal 16-inch minimum, so Griffin permanently pins and welds a muzzle device to it at the factory, bringing total length to a legal 16 inches with zero NFA paperwork. A tuned rifle-length gas system and suppressor-optimized buffer system keep recoil impulse soft, whether you’re shooting suppressed or unsuppressed. Built for duty-grade reliability with patrol-length handling, the MK1 Patrol pairs a Griffin A3 grip and Griffin ECS stock for a rifle that’s ready to work straight out of the case.

Key Specifications

• Chambered in .223 Wylde, safely running both .223 Remington and 5.56 NATO ammunition.
• The 14.5-inch 416R HEDP stainless steel barrel is pinned and welded to a muzzle device at the factory, reaching a legal 16-inch overall length with no NFA registration required.
• The P&W Griffin Silencer Mount muzzle device keeps the rifle suppressor-ready if you register a can later.
• A tuned rifle-length gas system softens recoil impulse for faster, more controlled follow-up shots.
• The suppressor-optimized buffer system keeps cycling reliable suppressed or unsuppressed.
• The forged upper and lower receiver with Type III hardcoat anodizing stands up to hard use.
• The anti-rotation tabbed rail lock-up keeps the free-float rail from shifting under recoil.
• The Griffin A3 grip gives a more vertical, ergonomic hold than a standard A2 grip.
• The Griffin ECS (Extreme Condition Stock) is built to hold up under duty-grade use.
• One included USGI 30-round magazine gets you shooting right out of the box.

Frequently Asked Questions

Is the 14.5-inch barrel legal without NFA paperwork? Yes, Griffin permanently pins and welds the muzzle device at the factory, bringing total barrel length to 16 inches, so no NFA registration is required.

Is the MK1 Patrol suppressor-ready? Yes, the pinned Silencer Mount muzzle device keeps it ready for a suppressor if you register one separately.

What makes the MK1 different from a standard AR upper and lower? The MK1 Patrol uses forged upper and lower receivers with anti-rotation tabbed rail lock-up for duty-grade durability.

Buy the Griffin Armament MK1 Patrol Carbine

The MK1 Patrol is a true front-line-style carbine, built forged and pinned to a legal 16 inches without giving up the compact handling patrol shooters want. Its rifle-length gas system and HEDP stainless barrel are built for accuracy and reliability shot after shot. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and see Griffin Armament‘s full lineup of semi-auto rifles.