Davidson Defense Blemished IX w/SBA3 Brace 5-inch 1:10 9MM AR-9 Freefloat M-Lok Handguard Pistol Full Build Kit

Blem IX 5 Inch AR-9 Full Build Kit 9mm Freefloat MLOK with SBA3 Brace

The IX AR-9 Full Build Kit is a complete pistol build package centered on a 5 inch 9mm barrel made from 4150 CrMoV with a Phosphate finish, slim profile, and a 1:10 twist rate. The upper receiver is a billet design machined from 6061-T6 aluminum with a Type III hardcoat anodized finish, paired with a 7 inch MLOK handguard made from aluminum in black, featuring a full top Picatinny rail and integrated QD mounts. This kit includes a complete bolt carrier group, charging handle, buffer tube, and an SB Tactical SBA3 adjustable pistol stabilizing brace. This unit is a Blem item.

Key Features

• 5 inch 9mm barrel, 4150 CrMoV, Phosphate finish, slim profile
• 1:10 twist rate, 1/2x36 thread pitch
• 9mm flash can, 1/2x36 thread
• Billet 6061-T6 aluminum upper receiver, Type III hardcoat anodized finish
• 7 inch MLOK handguard, aluminum, black
• Full top Picatinny rail
• Integrated QD mounts
• 9mm Nitride bolt carrier group, 8620 alloy steel
• Mil-Spec quality M4 charging handle
• Mil-Spec heavy-duty 6-position buffer tube
• Buffer weight 5.5 oz
• SB Tactical SBA3 adjustable pistol stabilizing brace, polymer, black
• Blem

Perfect For

• Builders assembling a 9mm AR-9 pistol platform at a Blem price
• Shooters wanting a billet upper paired with an MLOK handguard featuring QD mounts
• Builders looking for a matched bolt carrier group and brace in one kit

Barrel and Operation

This kit uses a 5 inch barrel made from 4150 CrMoV with a Phosphate finish and a slim profile. The 1:10 twist rate is suited to 9mm bullet weights, and the 1/2x36 thread pitch matches the included flash can. This build operates on a direct blowback system.

Upper Receiver and Handguard

The upper receiver is a billet design machined from 6061-T6 aluminum and finished in Type III hardcoat anodize. A 7 inch MLOK handguard made from aluminum in black surrounds the barrel without contacting it, featuring a full top Picatinny rail and integrated QD mounts, giving the upper assembly a compact exterior forend built for a short pistol length platform.

Bolt Carrier Group, Charging Handle, and Brace

The included bolt carrier group is made from 8620 alloy steel with a Nitride finish, paired with a buffer weighing 5.5 oz. A Mil-Spec quality M4 charging handle rounds out the upper side component set, and a Mil-Spec heavy-duty 6-position buffer tube is included as part of this build kit. An SB Tactical SBA3 adjustable pistol stabilizing brace in polymer and black is included as part of this build kit.

Follow safe handling and manufacturer instructions.

Ensure compliance with all applicable federal, state, and local laws.

This item is a Blem unit. No performance impact is implied.

Component specifications are subject to the details provided in this listing.