The Elite Force VFC Saber Carbine Gen 2 is one of the newest additions the M4 line from VFC. These rifles are fully equipped out of the box, featuring a new high-torque motor for faster response and cycle rate, QRS stock, trigger finger rest as well as M-Lok handguard system, which is quickly gaining speed in the accessory market, which is much lighter than your standard quad picatinny rail system. Internally, this rifle sports a 15" 6.03mm tight bore barrel for the best accuracy. Hop up can easily be adjusted by pulling back the charging handle, which has a functioning bolt catch and release built in.