I got this gun in a trade not to long ago. The gun feels real solid and is perfect for cqb. 9/10 condition. Missing charging handle spring, and has a small chip on the lower next to the pin. External Upgrades: -aftermarket charging handle -G&G keymod rail 9” -metal upper receiver -m4 buffer tube/stock Internal upgrades: -shs m120 spring -6.03 tightbore barrel -upgraded spring guide -high torque gears