Davidson Defense Garrison 16-inch 1:10 9MM AR-9 Freefloat Tubular M-Lok Handguard Rifle Full Build Kit

Garrison 16-inch 1:10 9mm AR-9 Freefloat Tubular M-LOK Rifle Full Build Kit

The Garrison is a 9mm AR-9 Full Build Kit built around a 16-inch direct blowback platform. The kit centers on a 16-inch 4150 CrMoV steel barrel with a nitride finish, 1:10 twist rate, and 1/2x36 thread pitch, paired with a 9mm A2 birdcage flash hider and a black 1/2-inch crush washer. The 7075-T6 aluminum anodized upper receiver features M4 feed ramps, a forward assist, and an ejection port door assembly, paired with a 15-inch aluminum tubular freefloat M-LOK handguard with a 1.77-inch internal diameter and suppressor-ready clearance. A complete 9mm nitride bolt carrier group in 8620 alloy steel with an external extractor compatible with Glock and Colt pattern magazines, and a Mil-Spec AR-15 M4 charging handle complete the upper side. The lower hardware includes a complete Mil-Spec AR-15 lower parts kit, a Mil-Spec heavy-duty 6-position aluminum carbine buffer tube, an AR-15 9mm carbine buffer, a USA-made standard AR-15 carbine recoil spring, a Mil-Spec AR-15 M16 receiver end plate, and an AR-15 carbine castle nut. The Special Operations AR-15 stock rounds out the kit. Lower receiver not included.

Key Features

• 16-inch 4150 CrMoV steel barrel, nitride finish, 1:10 twist, 1/2x36 thread pitch, 9mm
• Direct blowback platform
• 9mm A2 birdcage flash hider, 1/2x36, black 1/2-inch crush washer included
• 7075-T6 aluminum upper receiver, anodized, M4 feed ramps, forward assist, ejection port door assembly
• 15-inch aluminum tubular freefloat M-LOK handguard, 1.77-inch internal diameter, suppressor-ready clearance
• Complete 9mm nitride bolt carrier group, 8620 alloy steel, external extractor, Glock and Colt pattern magazine compatible
• Mil-Spec AR-15 M4 charging handle
• Complete Mil-Spec AR-15 lower parts kit
• Mil-Spec heavy-duty 6-position aluminum carbine buffer tube
• AR-15 9mm carbine buffer
• Standard AR-15 carbine recoil spring, made in USA
• Mil-Spec AR-15 M16 receiver end plate
• AR-15 carbine castle nut
• Special Operations AR-15 stock

Perfect For

• AR-9 rifle builders sourcing a complete 9mm blowback full build kit with a 16-inch nitride 4150 CrMoV barrel, 7075-T6 anodized upper receiver with forward assist, 15-inch aluminum tubular freefloat M-LOK handguard with suppressor-ready clearance, nitride BCG compatible with Glock and Colt pattern magazines, and Special Operations AR-15 stock already included, pairing it with their own lower receiver
• Shooters building a 16-inch 9mm direct blowback AR-9 rifle platform who want the AR-9 BCG, charging handle, complete lower parts kit, and Special Operations AR-15 stock covered in one kit with a suppressor-ready tubular freefloat M-LOK handguard
• AR-9 PCC rifle builders who want a complete blowback full build kit with a Glock and Colt pattern magazine compatible BCG and a 15-inch aluminum tubular freefloat M-LOK handguard with suppressor-ready clearance and a Special Operations AR-15 stock without sourcing components separately

Barrel and Muzzle Device

The 16-inch 4150 CrMoV steel barrel is chambered in 9mm with a nitride finish. The twist rate is 1:10 and the thread pitch is 1/2x36, which matches the included 9mm A2 birdcage flash hider. A black 1/2-inch crush washer is included. The direct blowback platform design addresses the 9mm cartridge in an AR-9 rifle caliber build without a gas system.

Upper Receiver and Handguard

The 7075-T6 aluminum upper receiver carries an anodized finish with M4 feed ramps, a forward assist, and an ejection port door assembly. The 15-inch aluminum tubular freefloat M-LOK handguard features a 1.77-inch internal diameter with suppressor-ready clearance and M-LOK attachment points along the body for accessory mounting. These two components define the exterior structure of the upper assembly on this AR-9 platform.

Bolt Carrier Group and Charging Handle

The complete 9mm nitride bolt carrier group is 8620 alloy steel with a nitride finish and features an external extractor compatible with both Glock and Colt pattern magazines. A Mil-Spec AR-15 M4 charging handle is included to complete the upper component set.

Lower Parts Kit and Buffer System

The complete Mil-Spec AR-15 lower parts kit covers the internal lower receiver components. The buffer system includes a Mil-Spec heavy-duty 6-position aluminum carbine buffer tube, an AR-15 9mm carbine buffer, a USA-made standard AR-15 carbine recoil spring, a Mil-Spec AR-15 M16 receiver end plate, and an AR-15 carbine castle nut. The Special Operations AR-15 stock pairs with the included Mil-Spec carbine buffer tube and covers the rear stock interface for this build.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. Verify compatibility with your specific 9mm AR-9 lower receiver and magazine pattern before use.