Included to this pack:

MK18, with an FDE colored 9.5 inch handguard on a 10.5 inch barrel , and mild retexturing.

M4 BLOCK II, in all black with a 12 inch handguard on a 14.5 inch barrel.

History to the MK18:

The MK18 is a compact AR-15 style firearm, originating as the Close Quarters Battle Receiver (CQBR) for U.S. Special Operations Forces, distinguished by its short 10.3-inch barrel. It was designed for maximum maneuverability in close quarters and is popular with military, law enforcement, and civilian users, often featuring a Daniel Defense RIS II quad-rail handguard and a 5.56mm cartridge. While effective in close range, its short barrel reduces velocity and terminal ballistics for longer distances compared to standard M4s.

History of the M4 BLOCK II:

The Special Operations Peculiar MODification (SOPMOD) kit is an accessory system for the M4A1 carbine, CQBR, FN SCAR Mk 16/17, HK416 and other weapons used by United States Special Operations Command (USSOCOM) special forces units, though it is not specific to SOCOM. The kit allows US Special Operations Forces (US SOF) personnel to configure their weapons to individual preferences and customize for different mission requirements.The program dates back to September 1989, when the Special Operations Special Technology (SOST) Modular Close Combat Carbine Project was founded. This was the first program to standardize components from the 1970s/1980s era of "duct tape and hose clamps". The Material Need Statement (MNS) was signed in May 1992 and, by September 1993, the Operational Requirements Document (ORD) for the program was validated. Responsibility for the program was then assigned to the Naval Surface Warfare Center Crane Division.[1][2]The SOPMOD kit is composed mostly of non-developmental items and commercial off-the-shelf (NDI/COTS) accessories packaged together to support four M4A1 carbines.[1][3] It allows for the attachment of any Picatinny compatible accessory that fits the length of the weapon.

[TACZ] ToxMav's pack