The Hexstorm with Magpul BTR Brace 6-inch 1:10 9mm AR-9 M-Lok Pistol Full Build Kit from Davidson Defense is a pistol-format full build kit for the AR-9 platform chambered in 9mm. The kit includes a 6-inch 4150 CrMoV barrel, a 4-inch Air Lite Series honeycomb M-Lok freefloat handguard with monolithic top rail, a 7075-T6 anodized upper receiver, a 9mm 8620 alloy steel bolt carrier group, a mil-spec charging handle, a lower parts kit, a buffer tube, a 5.5 oz 9mm carbine buffer, recoil spring, end plate, castle nut, and a Magpul BTR black polymer pistol brace. The lower receiver is not included.
The 6-inch barrel is chambered in 9mm and constructed from 4150 CrMoV steel with a 1:10 twist rate. The nitride finish covers the full barrel surface for corrosion and wear resistance. The muzzle is threaded 1/2x28. The 4-inch 6061-T6 anodized black aluminum Air Lite Series handguard features a honeycomb cutout pattern, a monolithic top Picatinny rail, and M-Lok slot access along its length for accessory mounting. The AR-9 platform operates on blowback, with no gas system components in this configuration.
The upper receiver is machined from 7075-T6 aluminum with an anodized finish. The 9mm bolt carrier group is constructed from 8620 alloy steel with a nitride finish and is specific to the AR-9 platform. The included mil-spec AR-15 M4 charging handle meets mil-spec dimensional standards for use with the upper receiver included in this kit.
The Magpul BTR black polymer pistol brace is included as the brace component for this pistol-format full build kit. The Magpul BTR is compatible with the buffer tube included in this kit and is intended for AR-9 pistol-format configurations.
Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included.
Caliber: 9mm (9x19)
Barrel: 6" 9mm AR-9 Barrel, Nitride Finish, 1:10 Twist, 4150 CrMoV Steel, 1/2x28 Thread Pitch
Barrel Length: 6-inch
Barrel Material: 4150 CrMoV Steel
Barrel Thread Pitch: 1/2x28
Barrel Finish: Nitride
Barrel Twist Rate: 1:10
Handguard: 4" Air Lite Series "Honeycomb" M-LOK Free Float Handguard with Monolithic Top Rail - Anodized Black
Handguard Material: 6061-T6 Aluminum
Handguard Color: Black
Handguard Style: Freefloat, M-Lok
Receiver Material: 7075 T6 Aluminum
Receiver Finish: Anodized
Charging Handle: AR-15 M4 Charging Handle Mil-Spec Quality
Bolt Carrier: 9MM Nitride Bolt Carrier Group 8620 Alloy Steel
Bolt Carrier Material: 8620 Alloy Steel
Bolt Carrier Finish: Nitride
Pistol Brace: Magpul BTR Pistol Brace
Pistol Brace Color: Black
Pistol Brace Material: Polymer
Buffer Weight: 9mm Carbine Buffer 5.5 oz
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