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

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Davidson Defense IX AR-9 Full Build Kit | 5" Barrel | Magpul BTR Brace | 9MM Nitride BCG | 7" M-LOK Freefloat Handguard | Enlarged Ejection Port

The Davidson Defense IX w/Magpul BTR Brace 5-inch AR-9 Full Build Kit delivers a complete, high-performance 9MM pistol platform with Magpul's innovative BTR (Buttstock/Brace-Ready) system. Featuring a 5-inch BC-9 barrel made from 4150 CrMoV steel with phosphate finish and 1:10 twist rate, 6061-T6 billet aluminum upper receiver with enlarged ejection port, 7-inch M-LOK freefloat handguard, 9MM nitride BCG, and Magpul BTR Pistol Brace with Mil-Spec buffer tube compatibility—perfect for AR-9 pistol builds, PCC competition, home defense, and shooters seeking a complete 9MM platform with Magpul ergonomics, enhanced ejection reliability, and modular accessory mounting.

Key Features:

• 5-Inch BC-9 Barrel: 4150 CrMoV steel construction with phosphate finish for corrosion resistance
• 1:10 Twist Rate: Optimized for stabilizing 9MM projectiles from 115gr to 147gr
• Direct Blowback Gas System: Reliable 9MM operation without gas system complexity
• 9MM Nitride Bolt Carrier Group: Durable nitride coating for enhanced lubricity and wear resistance
• Enlarged Ejection Port: Enhanced spent casing ejection for improved reliability
• 6061-T6 Billet Aluminum Upper: Precision-machined upper receiver specifically designed for pistol-caliber applications
• 7-Inch M-LOK Freefloat Handguard: Lightweight aluminum rail with modular accessory mounting
• Magpul BTR Pistol Brace: Innovative brace design with Mil-Spec buffer tube compatibility
• 9MM Flash Can Muzzle Device: Directs blast forward and reduces side concussion
• Mil-Spec Buffer Tube Compatible: Standard buffer tube interface for versatile brace/stock options
• Complete Build Kit: All components needed for full AR-9 pistol assembly
• Premium Finish: Hardcoat anodizing on all aluminum components

Perfect For:

• AR-9 pistol builds with Magpul brace systems
• PCC (Pistol Caliber Carbine) competition shooting
• Home defense and close-quarters applications
• Range training and recreational 9MM shooting
• Custom builds requiring Magpul ergonomics and aesthetics
• Shooters seeking enhanced ejection reliability with enlarged port design

Magpul BTR Pistol Brace System: The Magpul BTR (Buttstock/Brace-Ready) represents Magpul's entry into pistol brace technology, combining the company's renowned ergonomics and durability with ATF-compliant pistol brace design. Compatible with standard Mil-Spec buffer tubes, the BTR brace provides enhanced stability and control while maintaining the familiar Magpul feel and quality construction. The Mil-Spec compatibility also means this brace can be easily swapped or upgraded as needs change, offering long-term versatility for your AR-9 platform.

Enlarged Ejection Port for Enhanced Reliability: The billet upper receiver features an enlarged ejection port specifically designed for 9MM applications. The larger port opening ensures positive spent casing ejection, reducing the likelihood of stovepipe malfunctions or ejection-related issues—particularly important with the wider variety of 9MM ammunition types and brands available. This design consideration is especially beneficial when shooting suppressed, using lower-powered loads, or running the pistol in adverse conditions where extraction and ejection must remain 100% reliable.

Direct Blowback 9MM System: The direct blowback operating system is the proven standard for AR-9 platforms, offering simplicity and reliability without the complexity of gas systems, gas blocks, or gas tubes. This design uses the weight of the bolt carrier group and buffer system to cycle the action, resulting in fewer parts to maintain, straightforward operation, and reduced points of failure. The BC-9 barrel is specifically designed for pistol-caliber carbine applications, ensuring optimal performance with 9MM ammunition across a wide range of bullet weights and velocities.

Premium Billet Upper & 7-Inch M-LOK Freefloat Handguard: The 6061-T6 billet aluminum upper receiver is CNC-machined specifically for pistol-caliber applications with precise tolerances and features hardcoat anodizing for maximum durability. The 7-inch M-LOK freefloat handguard, constructed from lightweight 6061-T6 aluminum, eliminates barrel contact for improved accuracy while providing modular mounting options for lights, lasers, foregrips, and accessories at 3, 6, and 9 o'clock positions. The freefloat design ensures consistent point of impact and improved heat dissipation during extended shooting sessions.