Product Description
UTG PRO AR-15 Ops Ready S4 Mil-Spec Stock Kit (Flat Dark Earth)
The UTG PRO AR-15 Ops Ready S4 Mil-Spec Stock Kit (Flat Dark Earth) offers adjustable length-of-pull and a solid cheek weld for consistent sight alignment on AR-platform rifles and carbines. UTG stocks are designed to mil-spec dimensions for compatibility with standard buffer tubes, fitting most AR-15, M4, and compatible builds. Constructed from high-strength polymer with reinforced mounting hardware, this stock resists the rigors of range and field use. Tool-free adjustments let you dial in fit quickly for different shooters or gear setups. Key Features • Adjustable length-of-pull • Solid cheek weld for consistent sight picture • Mil-spec buffer tube compatible • High-strength polymer construction • QD sling attachment point(s) • Finish: Black
This is a UTG PRO AR-15 Ops Ready S4 Mil-spec Stock Kit molded from impact resistant high strength matte black polymer. It is complete with Mil-spec extension tube, buffer, buffer spring, receiver end plate, and castle nut. Its unique 4.28" length with 4 position adjustability provides comfortable length of pull and ease of shouldering firearm when wearing a load bearing vest or plate carrier system. It is built for heavy duty use with the tightest tolerance controls to provide the most secure fit and function. Flat dark earth finish.
Key Features
- FDE finish
- Ops ready S4
- Mil-spec stock kit
- Compact
- Includes extension tube, buffer, buffer spring, receiver end plate & castle nut
- Fits AR-15
Specifications
- Manufacturer: Leapers, Inc. - UTG
- Model: UTG PRO
- UPC: 4717385552777
- Manufacturer Part Number: RBUS4DM
- Type: Stock
- Sub Category: Stocks & Buffer Tubes
- Color: Flat Dark Earth
- Fit: AR-15
- Size: Compact
- Weight: 21
Product Videos
Custom Field
Product Reviews
6 Reviews Hide Reviews Show Reviews
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Excellent All-In-One Kit
I wanted a complete, no-fuss solution for my AR-15 build, and this kit is spot on. The UTG PRO, FDE Mil-spec Stock Kit includes everything you need—buffer, tube, castle nut—all Mil-spec. The minimal profile and 4-position adjustability are huge pluses. Highly recommended!
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Decent But Could Be More Comfortable
The stock is lightweight and has a nice FDE finish, but I found the cheek rest a bit short for my setup. It’s still decent for the price, but if you prefer a taller cheek weld, you might consider alternative options. Installation was smooth, and everything else seems solid.
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Perfect for Plate Carrier Use
I wear a plate carrier a lot, and the UTG PRO, FDE Mil-spec Stock Kit gives me the shorter length of pull I need. The locking positions are precise, and the sling swivel housing is easy to swap. Cobratac made the buying process hassle-free. Two thumbs up.
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Excellent Feel & Quality
I love the rubberized butt pad—it makes a noticeable difference in recoil control. The cheek rest is great, especially with the removable extension for added comfort. It’s my first UTG stock, and I’m impressed by its sturdy build.
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Great Fit for My SBR
I needed a compact stock for my SBR project, and this FDE kit delivered. It’s comfortable, adjusts easily, and locks tight. Cobratac shipped it out quick, which was a plus. Highly recommend for anyone looking to minimize bulk without sacrificing quality.
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Solid Stock, Some Installation Hiccups
The UTG PRO, FDE Mil-spec Stock Kit is well-made and surprisingly lightweight. Installation took a little longer than expected, but once it was on, it felt rock solid. I wish it had clearer instructions, but overall, it’s a great addition to my build.
