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UTG Ops Ready S2 Mil-Spec Stock Kit for M4 Rifles, Includes Mil-Spec 6-Position Extension Tube, Buffer, Buffer Spring, Tear-Drop Ring and Castle Nut, Flat Dark Earth

SKU: UTRBUS2DM MFR: RBUS2DM
$69.97
$79.97
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Key Features

  • Enhance your M4 rifle with this UTG Ops Ready S2 Mil-Spec stock kit in flat dark earth.
  • Enjoy superior durability with the aluminum/polymer construction of this M4 rifle stock.
  • Achieve optimal accuracy with a stable, 6-position Mil-Spec extension tube.
  • This complete stock kit offers easy installation, upgrading your M4 rifle quickly.
  • Get everything you need: stock, buffer, spring, ring, and nut included in the kit.
  • Dependable UTG rifle stock backed by a 1-year warranty for peace of mind.
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Special Order?Estimated to Ship: 08/14/2025
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UTG Stock Kit Specifications

  • Compatibility

    M4 rifles

  • Material

    Aluminum/Polymer

  • Height

    5.25" (13.34cm)

  • Length

    7.50" (19.05cm)

  • Weight

    19.7oz (558.49g)

  • UPC Code

    4717385551510

About UTG Stock Kit

When it comes to robust, high-performance accessories for M4 rifles, the Ops Ready S2 Mil-Spec Stock Kit stands out. Engineered for heavy-duty use, this kit boasts the tightest tolerance controls, ensuring a secure fit and optimal function. The Mil-Spec stock is molded from an impact-resistant, high-strength polymer in a sleek Flat Dark Earth color, offering durability and style.

The kit includes a Mil-Spec diameter extension tube, precision-machined from aircraft-grade aluminum. With rolled threads and a Flat Dark Earth Cerakote finish, this tube offers superior corrosion and wear resistance, making it a reliable choice for any shooting environment.

The ergonomically chamfered, built-in rubberized butt pad and slanted cheek rest enhance shooting stability and promote consistent firearm control. This kit is designed with the shooter in mind, featuring an integral ambidextrous sling loop and reversible QD sling swivel housing, making it suitable for both left and right-handed shooters.

The lightweight, extra slim profile with an extended 7.5" length increases the length of pull, offering improved firearm handling when combined with UTG PRO Super Slim Handguards. The kit includes a polymer stock, Mil-Spec 6 position extension tube in FDE Cerakote, buffer, buffer spring, tear-drop ring, and castle nut.

Designed for snag-free performance, the Ops Ready S2 Mil-Spec Stock Kit features fully dehorned corners and melted contours for increased comfort. This comprehensive kit is a must-have for any M4 rifle owner looking to enhance their firearm's performance and handling.

UTG Stock Kit Features

  • Heavy-duty, Mil-Spec Stock Kit designed for M4 rifles
  • Crafted from impact-resistant, high-strength polymer in Flat Dark Earth
  • Includes precision-machined extension tube from aircraft-grade aluminum with FDE Cerakote finish
  • Ergonomic design featuring rubberized butt pad and slanted cheek rest for enhanced shooting stability
  • Ambidextrous sling loop and reversible QD sling swivel housing for left or right-handed shooters
  • Snag-free design with dehorned corners and melted contours for increased comfort

Warranty Information

This product has a limited warranty of 12 months.

Key Features

  • Enhance your M4 rifle with this UTG Ops Ready S2 Mil-Spec stock kit in flat dark earth.
  • Enjoy superior durability with the aluminum/polymer construction of this M4 rifle stock.
  • Achieve optimal accuracy with a stable, 6-position Mil-Spec extension tube.
  • This complete stock kit offers easy installation, upgrading your M4 rifle quickly.
  • Get everything you need: stock, buffer, spring, ring, and nut included in the kit.
  • Dependable UTG rifle stock backed by a 1-year warranty for peace of mind.

What's in the box:

  • UTG PRO Ops Ready S2 Mil-Spec Stock
  • Mil-Spec 6-Position Extension Tube
  • Buffer
  • Buffer Spring
  • Tear-Drop Ring and Castle Nut
  • UTG 1 Year Limited Warranty