Stock Ambidextrous Selector Switch Visible Bright Light II (VBL II) (based on the older gen Surefire M962C model, replacement for the Insight VLI) High Reliability Magazines (HRM) steel and aluminum If more of the accessories are needed, it is typical for units to "cannibalize" the kits of inactive teams. The documentation for the kit does not require a rewrite if improved replacements for any of the current items can be found. As a result, this content list has changed over time. Several potential additions include the KAC Masterkey Shotgun, the M26 Modular Accessory Shotgun System, and the M320 grenade launcher. Also, various EOTech holographic sights, prominently EOTech 551s and 552s are used on many SOPMOD configured M4s. Block I Phased Replacements Daniel Defense M4A1 RIS II (Rail Interface System), GL/SSC RIS II (Grenade Launcher/Sound Suppressor Capable), and MK18 RIS II (with FSP (front sight post) variations) free-float handguards Insight M3X VBL III Gun Light (SU-233/PVS), replacement for the VBL II Insight M6X VBL III Integrated Gun Light (SU-238/PVS), replacement for the VBL II EOTech 553 Holographic Weapon Sight (SU-231/PEQ) Trijicon ACOG TA31ECOS 4x Scope + Docter Miniature Red Dot (MRD) (SU-237/PVS) AN/PVS-17 Product Improvement Kit BUIS II Block II The MDNS (Miniature Day-Night Sight) program included the Block I Phased Replacement components and the Block II components Daniel Defense M4A1 RIS II (Rail Interface System), GL/SSC RIS II (Grenade Launcher/Sound Suppressor Capable), and MK18 RIS II (with FSP (front sight post) variations) free-float handguards Insight M3X VBL III Gun Light (SU-233/PVS), replacement for the VBL II Insight M6X VBL III Integrated Gun Light (SU-238/PVS), replacement for the VBL II Insight WMX 200 Tactical Weapon Light EOTech 553 Holographic Weapon Sight (SU-231/PEQ) EOTech EXPS3-0 Holographic Weapon Sight (SU-231A/PEQ) AN/PVS-17 Product Improvement Kit BUIS II Insight LA-5/PEQ ATPIAL (Advanced Target Pointer Illuminator Aiming Laser), a high powered variant of the AN/PEQ-15 Insight CNVD-T Thermal Sight (SU-232/PAS) EOTech M40GL Grenade Launcher Sight (SU-253/PEQ ECOS-GL) Elcan SpecterDR 1-4x Scope + Docter MRD (SU-230/PVS) Trijicon ACOG TA31ECOS 4x Scope + Docter MRD (SU-237/PVS) Insight AN/PVS-24 Clip-On Night Vision Device-Image Intensified (CVND-I2) References Rifles of the United States