AR-9 4.5" Complete Upper Receiver Build Kit - 4.25" M-LOK Handguard
This Complete Upper Build kit is comprised of the following items and comes with everything that you need to complete an upper.
- Kaw Valley Precision 4.5" 9mm AR Barrel - 1/2x36
- Complete 9MM AR-15 Bolt Carrier Group - Colt / Glock
- Always Armed M-LOK Free Float Handguard - 4.25"
- RTB 9mm / 22LR True Slick Side Upper Receiver
- Fluted Compression Brake 1/2X36" Anodized - 9mm
- Standard M4 5.56 Charging Handle - 7075 Aluminum