UTG Model 4 Combat Ops S1 Stock Kit for AR-15 – 6-Position Mil-Spec, Black (RBUS1BM)

• Six position collapsible stock kit for AR-15 and M4 style rifles
• Includes extension tube buffer spring castle nut and tear drop ring components
• Constructed from rugged impact resistant polymer for durability in field use
• Mil spec buffer tube with rolled threads ensures secure and precise fit
• Features rubberized recoil pad and ambidextrous sling attachment options
• Designed for stable cheek weld and reduced movement during operation

The Leapers, Inc. – UTG Model 4 Combat Ops S1 Stock Kit 6-Position Mil-Spec Stock Assembly Black is a collapsible rifle stock kit designed for installation on AR-15 and M4 style rifles.

This stock kit features a 6-position adjustable design with a Mil-Spec receiver extension tube for compatibility with AR-15 platforms. It includes a buffer, buffer spring, extension tube, tear-drop ring, and castle nut for installation. The construction uses high impact polymer with a black finish for standard configurations. It also includes a rubberized butt pad and integrated sling attachment points such as an ambidextrous sling loop and QD swivel housing. This model is used for configuring rifles with adjustable length of pull in range use or field setups. The UTG stock kit provides a complete assembly for installing a collapsible stock system.