Ox Tail 7.5" 5.56 NATO AR-15 Pistol Build Kit, 7" M-LOK Handguard, 1:7, w/ SBA5 Brace

Ox Tail 7.5" 5.56 NATO AR-15 Pistol Build Kit, 7" M-LOK Handguard, 1:7, w/ SBA5 Brace

Complete AR-15 pistol build kit featuring a 416R stainless steel barrel, 7075-T6 aluminum upper receiver, and SBA5 pistol stabilizing brace. This kit includes everything except the lower receiver, delivering a compact 5.56 NATO platform with professional-grade components and USA-made construction.

Key Features

• 416R stainless steel barrel, 7.5-inch length, 1:7 twist rate for 5.56 NATO
• 7075-T6 aluminum upper receiver with M4 feed ramps and forward assist
• 7-inch M-LOK free-float handguard for accessory mounting
• SB Tactical SBA5 pistol stabilizing brace included
• Complete bolt carrier group with nitride finish, USA-made
• Pistol length gas tube with micro low-profile gas block
• Full lower parts kit, buffer tube, buffer, recoil spring, castle nut, and end plate included
• AR-15 1/2x28 GI birdcage flash hider with crush washer

Perfect For

• Shooters building a compact, maneuverable 5.56 NATO platform
• Home defense and personal protection configurations
• Shooters seeking a complete kit without lower receiver complexity
• Builders prioritizing stainless steel barrel durability and corrosion resistance
• Pistol brace users in compliant jurisdictions

Compact Stainless Steel Performance

The 416R stainless barrel delivers reliability in a 7.5-inch package optimized for pistol length gas cycling. Stainless construction resists corrosion compared to chrome-moly alternatives, making this platform suitable for varied storage conditions. The polished finish maintains its appearance without requiring frequent maintenance.

Professional Component Integration

This kit combines USA-made bolt carrier group construction with 7075-T6 aluminum upper and lower receiver materials. The nitride-finished bolt carrier provides durability across extended shooting sessions. M4 feed ramps ensure reliable ammunition feeding across standard 5.56 NATO loads. The micro low-profile gas block and pistol length gas tube are sized for the compact barrel profile without over-gassing.

M-LOK Mounting Ecosystem

The 7-inch M-LOK handguard provides dedicated mounting points for tactical accessories including lights, lasers, and vertical grips. Free-float design isolates the barrel from handguard contact, supporting consistent accuracy. M-LOK slots distribute along the handguard for flexible accessory placement.

SBA5 Brace Configuration

The kit ships with the SB Tactical SBA5 pistol stabilizing brace, a strap-equipped design that stabilizes the firearm during operation. The brace attaches to the included mil-spec buffer tube via standard AR-15 end plate and castle nut. The SBA5 provides a comfortable shooting platform without requiring NFA registration in compliant jurisdictions.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. Verify brace legality in your jurisdiction before assembly and use.