Super short conversion kit for the TM M4. Includes full metal RIS foregrip, super short barrel with detacheable silencer. Includes full rail covers and vertical tactical fore-grip. Easy to install for that special look. Note that this kit does away with the front sight for unobstructed viewing so a scope or flip-up sights would be required for aiming after installation.
With your full RIS rail, consider opting for some lighting and laser accessories to install. You can also get the G&P bipod adapter that fits right onto the RIS rail for installation of a bipod.