UTG Ops Ready S1 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: UTRBUS1DM MFR: RBUS1DM
$79.97
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Key Features

  • Upgrade your M4 rifle with this durable UTG Mil-Spec stock kit for enhanced performance.
  • Achieve optimal accuracy with the stable 6-position extension tube included in this stock kit.
  • Enjoy easy installation; this UTG stock kit includes everything needed for M4 rifle upgrades.
  • Enhance your shooting experience with this Mil-Spec stock, designed for comfortable shouldering.
  • Built for reliability, this polymer stock offers exceptional value and long-lasting durability.
  • Customize your M4 platform with this Flat Dark Earth stock kit, blending seamlessly with your setup.
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Special Order?Estimated to Ship: 08/24/2025
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UTG Stock Kit Specifications

  • Compatibility

    M4 rifles

  • Material

    Polymer

  • Height

    5.50" (13.97cm)

  • Length

    8.50" (21.59cm)

  • Weight

    23.1oz (654.87g)

  • UPC Code

    4717385551299

About UTG Stock Kit

Bring precision and durability to your M4 rifle with the Ops Ready S1 Mil-Spec Stock Kit. Engineered for heavy-duty use, this kit is constructed with the tightest tolerance controls to ensure a secure fit and optimal function. The mil-spec stock is molded from impact-resistant, high-strength polymer in a sleek flat dark earth color, offering both aesthetic appeal and robust durability.

The kit includes a mil-spec diameter extension tube, precision-machined from aircraft-grade aluminum for superior strength. Rolled threads and a flat dark earth Cerakote finish enhance corrosion and wear resistance, ensuring longevity even under harsh conditions.

Experience enhanced shooting stability with the ergonomically chamfered, built-in rubberized butt pad and a slanted cheek rest. These features promote consistent firearm control, improving your shooting accuracy and comfort.

The stock kit also boasts dual storage compartments with removable waterproof caps, providing dry storage for batteries (up to 8 CR123) or other essential shooting accessories. The integral ambidextrous sling loop and QD sling swivel housing cater to both left and right-handed shooters, enhancing its versatility.

With an extended 8" length for increased length of pull, this stock kit is designed to enhance your firearm handling experience. The kit includes a polymer stock, mil-spec 6-position extension tube, buffer, buffer spring, tear-drop ring, and castle nut.

Designed for snag-free performance, the stock kit features fully dehorned corners and melted contours for increased comfort. Upgrade your M4 rifle with the Ops Ready S1 Mil-Spec Stock Kit for a reliable, high-quality, and versatile shooting experience.

UTG Stock Kit Features

  • High-strength, impact-resistant polymer stock in flat dark earth color for M4 rifles
  • Includes precision-machined extension tube from aircraft-grade aluminum with corrosion-resistant cerakote finish
  • Ergonomically designed with a rubberized butt pad and slanted cheek rest for enhanced shooting stability
  • Dual storage compartments with waterproof caps for batteries or essential shooting accessories
  • Ambidextrous sling loop and QD sling swivel housing for left or right-handed shooters
  • Fully dehorned corners and melted contours for a snag-free, comfortable shooting experience

Warranty Information

This product has a limited warranty of 12 months.

Key Features

  • Upgrade your M4 rifle with this durable UTG Mil-Spec stock kit for enhanced performance.
  • Achieve optimal accuracy with the stable 6-position extension tube included in this stock kit.
  • Enjoy easy installation; this UTG stock kit includes everything needed for M4 rifle upgrades.
  • Enhance your shooting experience with this Mil-Spec stock, designed for comfortable shouldering.
  • Built for reliability, this polymer stock offers exceptional value and long-lasting durability.
  • Customize your M4 platform with this Flat Dark Earth stock kit, blending seamlessly with your setup.

What's in the box:

  • UTG PRO Ops Ready S1 Mil-Spec Stock
  • Mil-Spec 6-Position Extension Tube
  • Buffer
  • Buffer Spring
  • Tear-Drop Ring and Castle Nut
  • UTG 1 Year Limited Warranty