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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, Black

SKU: UTRBUS2BM MFR: RBUS2BM
$64.97
$79.97
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Key Features

  • Enhance your M4 rifle with this UTG Mil-Spec stock kit for superior durability.
  • Achieve optimal accuracy with the stable 6-position extension tube on your M4.
  • Enjoy easy customization; this UTG stock is compatible with most M4 platform rifles.
  • Upgrade your rifle with a high-value, complete stock kit including buffer & spring.
  • Depend on the UTG Ops Ready S2 stock for reliable performance in any shooting scenario.
  • Backed by UTG's warranty, ensuring your M4 rifle stock is protected from defects.
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Special Order?Estimated to Ship: 09/10/2025
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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

    4717385551459

About UTG Stock Kit

Where precision meets durability, the Ops Ready S2 Mil-Spec Stock Kit for M4 Rifles is an essential upgrade for firearm enthusiasts seeking military-grade reliability and performance. Crafted with the tightest tolerance controls, this kit ensures the most secure fit and function for your M4 rifle.

The stock itself is molded from impact-resistant, high-strength polymer in a sleek black finish, offering a sturdy and durable option that can withstand the rigors of heavy-duty use. The mil-spec diameter extension tube is precision-machined from aircraft-grade aluminum, featuring rolled threads for enhanced durability and an anodized finish to provide the utmost in corrosion and wear resistance.

Designed with the shooter's comfort and stability in mind, the stock includes an ergonomically chamfered, built-in rubberized butt pad and a slanted cheek rest. These features enhance shooting stability and promote consistent firearm control, allowing for precise and comfortable use in various shooting scenarios.

The kit is thoughtfully engineered with an integral ambidextrous sling loop and QD sling swivel housing, accommodating both left and right-handed shooters with ease. Its lightweight, extra slim profile and extended 7.5" length contribute to an increased length of pull, which, when combined with UTG PRO Super Slim Handguards, results in a superior firearm handling experience.

Included in this comprehensive stock kit are the polymer stock, mil-spec 6-position extension tube, buffer, buffer spring, tear-drop ring, and castle nut. Each component is designed for snag-free performance, featuring fully dehorned corners and melted contours that ensure increased comfort during use.

Whether you're on the range or in the field, the Ops Ready S2 Mil-Spec Stock Kit is the epitome of high-quality, sturdy, and reliable firearm accessories, making it a top choice for those who demand the best in versatility and durability for their M4 rifles.

UTG Stock Kit Features

  • Military-grade stock kit designed for M4 rifles, enhancing function and performance
  • Constructed with impact-resistant, high-strength polymer and aircraft-grade aluminum for maximum durability
  • Ergonomic design featuring a rubberized butt pad and slanted cheek rest for enhanced shooting stability
  • Ambidextrous sling loop and QD sling swivel housing for left or right-handed shooters
  • Extra slim profile with extended 7.5" length for superior firearm handling experience
  • Snag-free performance with fully dehorned corners and melted contours for increased comfort
  • Comprehensive kit includes polymer stock, 6-position extension tube, buffer, buffer spring, tear-drop ring, and castle nut

Warranty Information

This product has a limited warranty of 12 months.

Key Features

  • Enhance your M4 rifle with this UTG Mil-Spec stock kit for superior durability.
  • Achieve optimal accuracy with the stable 6-position extension tube on your M4.
  • Enjoy easy customization; this UTG stock is compatible with most M4 platform rifles.
  • Upgrade your rifle with a high-value, complete stock kit including buffer & spring.
  • Depend on the UTG Ops Ready S2 stock for reliable performance in any shooting scenario.
  • Backed by UTG's warranty, ensuring your M4 rifle stock is protected from defects.

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