Blue Force Gear Ten-Speed M-4 Chest Rig, Multi-Cam TSP-CHESTRIG-M4-M The Ten-Speed M4 Chest Rig is designed as an ultralight fighting load - holding 4 M4 or similar sized magazines with 3 x 3 MOLLE fields on either side for mounting Trauma Kit NOW!" pistol mag pouches" utility pouches" or any other MOLLE compatible pouches.