Product Code: BACUSTCASV Product Name: BA Custom M4 CASV Stock: In Weight: 4200g Description: G&P M4A1Based Bomber Selective Rail System Installed G&P 600m Flip up Rear Sight Specification: Full Upgrade to 320 fps with 7mm Reinforced gear box GP 130Rd Magazine Included **Color Choice : Black, OD, Tan, Grey