The Adams Arms Standard 5.45x39 Piston Upper

• Adams Arms 16” Carbine Barrel
• 1:8 Right Handed Twist
• M4 feed Ramps
• Chambered in 5.45x39 Russian
• Melonited Piston Parts, Barrel, Bolt Carrier, and Flash Hider
• Ionbonded 5.45x39 Bolt
• M4 Style Handguard and Handguard Cap
• Comes With 30 5.45x39 Magazine
• Comes With Wolff Extra Power Hammer Spring