UTG Model 4 Combat Ops S2 Stock Kit for AR-15 – 6-Position Mil-Spec, Includes Buffer Kit, Black (RBUS2BM)

• Six position mil spec stock assembly kit designed for AR-15 platform rifles
• Includes extension tube buffer spring castle nut and related mounting hardware components
• Constructed from reinforced polymer with aluminum receiver extension for durability
• Features ambidextrous sling loop and QD sling swivel housing for flexibility
• Ergonomic cheek rest and rubberized butt pad improve shooting stability
• Designed for secure fit with mil spec components and reliable field performance

The Leapers, Inc. – UTG Model 4 Combat Ops S2 Stock Kit is a rifle stock kit designed for AR-15 platform stock replacement and adjustment. This 6-position mil-spec stock assembly provides a configurable length of pull using a mil-spec receiver extension system.

The kit includes an extension tube, buffer, buffer spring, tear-drop ring, and castle nut, forming a complete buffer tube assembly for AR-15 rifles. It features reinforced polymer construction with a black finish and a rubberized butt pad with a slanted cheek rest. The stock incorporates an integral sling loop and ambidextrous QD sling swivel housing for sling attachment. In standard configurations, the mil-spec extension tube is machined from aircraft aluminum with rolled threads and anodized for wear resistance. This product is used for rifle stock installation and adjustment in range use and general firearm setup.