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, Black

UTG Stock Kit

UTG PRO Ops Ready S1 Mil-Spec Stock Kit for M4 Rifles, Black

Generally ships in 7-14 days, subject to availability

Special Order

Generally ships in 7-14 days, subject to availability Estimated to Ship: 07/28/2025.

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UTG Stock Kit 

Upgrade your M4 rifle with the durable & accurate UTG Ops Ready S1 Stock Kit. Mil-Spec. Easy to install. Backed by a warranty. Shop now!

An essential upgrade for the discerning marksman, the Ops Ready S1 Mil-Spec Stock Kit for M4 Rifles is engineered to the highest standards of durability and precision. This kit is meticulously constructed to meet the rigorous demands of heavy-duty use, with tight tolerance controls ensuring a secure fit and optimal function.The stock itself is crafted from an impact-resistant, high-strength polymer in a sleek black finish, offering a robust build that can withstand the rigors of active use. The mil-spec diameter extension tube is precision-machined from aircraft-grade aluminum, featuring rolled threads for enhanced strength and an anodized finish to provide superior corrosion and wear resistance.Designed with the shooter's comfort and stability in mind, the stock boasts an ergonomically chamfered, built-in rubberized butt pad and a slanted cheek rest. These features work in tandem to enhance shooting stability and promote consistent firearm control, even in the most challenging conditions.The Ops Ready S1 Stock Kit is also thoughtfully equipped with dual storage compartments, complete with removable waterproof caps. These compartments offer dry storage solutions for batteries (accommodating up to 8 CR123) and/or other essential accessories, ensuring that your gear remains protected and accessible.For those who value versatility, the integral ambidextrous sling loop and QD sling swivel housing cater to both left and right-handed shooters, providing a range of carrying options. The extended 8-inch length of the stock allows for an increased length of pull, which, when combined with UTG PRO Super Slim Handguards, delivers a superior firearm handling experience.Included in this comprehensive 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, with 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 S1 Mil-Spec Stock Kit is the definitive choice for upgrading your M4 rifle with a stock that offers unparalleled strength, comfort, and functionality.

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, Black

Key Features

Protect your gear with Adorama Protect.* Learn more

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, Black

Save 5% Every Day†

Key Features

Protect your gear with Adorama Protect.* Learn more

Save 5% Every Day^†