The original SOPMOD Block I kit included the following: •
Knight's Armament Company (KAC)
Rail Interface System/Rail Adapter System (RIS/RAS)
forearm with rail covers of various lengths. • KAC Vertical Foregrip (VFG) • KAC 300m
backup iron sights (BUIS) •
Trijicon TA01M4A1 4x32mm
Advanced Combat Optical Gunsight (ACOG) •
Aimpoint ECOS-N (Enhanced Combat Optical Sight-Navy), a variant of the
CompM2 using the Wilcox Aimpoint CompM mount instead of the standard issue QRP mount • Tactical Ordnance and Equipment Improved Combat Sling, which allows for secure cross body/patrol carry. • Precision Reflex, Inc. (PRI) M69 Bracket Mount for the
AN/PVS-14 night vision device. Only two of following were included per kit: •
Insight AN/PEQ-2 Infrared Target Pointer/Illuminator/Aiming Laser (ITPIAL) • Insight
Visible Light Illuminator (VLI) •
Trijicon RX01M4A1 1x24 Dual Illuminated
Reflex Sight • KAC NT-4 Quick-Detach
Sound Suppressor (QDSS) kit Only one of the following was included per kit: •
M203A1 Grenade Launcher with a 9-inch barrel •
KAC M203 Grenade Launcher Quick Release Front Bracket • Quick-attach M203 Grenade Launcher Leaf Sight •
Insight AN/PEQ-5 Carbine Visible Laser (CVL) • Insight AN/PAQ-4 Infrared Aiming Light •
AN/PVS-17A Mini- Night Vision Sight • AN/PSQ-18A M203 Day/Night Sight • Carrying/storage case for kit accessories Part of the SOPMOD Block I (but not always issued with kits): • Gas-deflecting
charging handles (presumably the PRI M84 Gas Buster Charging Handle with Military Big Latch) • Extraction Parts Set #2 • Redi-Mag •
Lewis Machine and Tool Company (LMT) /
B5 Systems Sloping Cheekweld 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.
Phased replacement 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 •
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==