Tippmann TMC M-Lok Shroud 310mm w/ 16" Barrel (.50 Cal) 105.90 GBP 21.18 GBP M-Lok Handguard for Tippmann TMC markers (incl. 16" barrel .50 caliber). BUY Share Article Number: 3703 Information Reviews M-Lok Handguard 310mm (12.25") for Tippmann TMC .50 cal markers (incl. 16" barrel).