FREE SHIPPING & FREE RETURNS*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Special offer available for this product. Click here to see!
Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
Questions & Answers
Will this fit onto the SI extended pistol buffer tube (~5 1/4” long) securely or milspec only? Expert Answer

The UTG Pro AR15 Ops Ready S4 Mil-spec Stock is only compatible with Milspec 6-position buffer tubes/receiver extensions. It would not be compatible with the SI Pistol Buffer Tube.

by Ethan, Gear Expert, February 23, 2023
What is the lop fully extended? Expert Answer

Length of pull will be roughly 11.74".

by Kurt Colbourne, Gear Expert, March 31, 2021
Customer Reviews
Helpful Positive Review Great stock by Patrickinmi, March 23, 2018
Its a 4 position stock fit tight to shouldering in close for using Mini Red Dot on top of regular scope . Actually they could have made it 1/2 inches shorter and still would have enough length for regular scope on my AK . My arm length is 36 inches...
Read More...
4/4 found this helpful
Helpful Positive Review Very compact by Uli, February 28, 2020
I really like the size of this stock, fits well in my shoulder. Great quality on the materials and the colors match well. There is some play when you extent the stock through it's four positions but not excessive.
2/2 found this helpful
Helpful Positive Review AR-9 build by Glockzone, September 16, 2020
I built an AR 9 for shooting pistol caliber carbine class. I was looking for a lite weight but sturdy adjustable stock. This stock is better than the higher price adjustable stock. I am really considering replacing the other stock with this one. I wo...
Read More...
1/1 found this helpful
Helpful Positive Review compact/light builds. by Dragonw4g, Verified Owner, October 12, 2020
These are excellent little minimilist stocks. I have 2 of them in black and fde. The stock is perfect to get more of a PDW length for your rifle. I have it on an Aero M4Enhanced lower. It is a supremely light set up. Perfect for smaller shooters. UTG...
Read More...
1/1 found this helpful
Helpful Positive Review Compact, simple, lightweight AR stock by E, Verified Owner, October 28, 2020
The more Leapers products I get, the more I like them - reasonable prices, good quality (good enough for me), and innovative designs. Their S4 stock is my most recent purchase from Leapers, and it embodies all the things just described about Leapers...
Read More...
3/3 found this helpful
Helpful Positive Review Great For a .22 & Ar-15 with Mil-spec buffers. by JAS, Verified Owner, December 2, 2020
Awesome little stock for the money really compact and light weight for the money. Great for my 22 since recoil isn't hard at all. Could be great fit for any AR-15 as well. Tried on my AR-10 but would like a little more padding for that one. Highly ...
Read More...
2/2 found this helpful
Read All 15 Reviews
Show In Stock Only
2 Models Available
Color
All
Search
Click to select this item for your bundle offer!

Buy Together and Save

As low as $49.27
You Save Up to 49%
Receive $0.62 OP Bucks

Product Info for UTG Pro AR15 Ops Ready S4 Mil-spec Stock

UTG PRO made in specialized factories AR15 Ops Ready S4 Mil-spec Stock, 4.28 Length, 4 Pos. Adjustable, Minimal Profile, Ergonomic Cheek Rest & Rubberized Butt Pad, Features Ambi. Sling Swivel Housing & Sling Loop, Includes Removable 5.51"Extended Cheek Rest Insert, Matte Black, Stock Onlyimage

WARNING: California`s Proposition 65

Specifications for UTG Pro AR15 Ops Ready S4 Mil-spec Stock:

Manufacturer: UTG Pro
Gun Model: AR-15
Gun Type: Rifle
Condition: New
Hand: Ambidextrous
Buffer Tube Size: Mil-Spec
Fabric/Material: Polymer

Package Contents:

  • UTG Pro AR15 Ops Ready S4 Mil-spec Stock

UTG Pro AR15 Ops Ready S4 Mil-spec Stock Orderable Models

List of Orderable Models

UTG Pro AR15 Ops Ready S4 Mil-spec Stock Only, Black, RBUS4BMS , MPN: RBUS4BMS , UPC: 4717385552753 , Code: 2NZ-BSC-LUPSTOCK-RBUS4BMS
UTG Pro AR15 Ops Ready S4 Mil-spec Stock Only, FDE, RBUS4DMS , MPN: RBUS4DMS , UPC: 4717385552784 , Code: 2NZ-BSC-LUPSTOCK-RBUS4DMS

UTG Pro AR15 Ops Ready S4 Mil-spec Stock Unavailable & Discontinued Models

List of Unorderable Models

USED, UTG Pro AR15 Ops Ready S4 Mil-spec Stock Only, Black, RBUS4BMS , MPN: RBUS4BMS-EDEMO , Code: 2NZ-BSC-LUPSTOCK-RBUS4BMS-EDEMO-IN-C
USED UTG Pro AR15 Ops Ready S4 Mil-spec Stock Only, Black, RBUS4BMS, EDEMO3, Used, Condition Fair, Scratches , MPN: RBUS4BMS-EDEMO3 , Code: 2NZ-BSC-LUPSTOCK-RBUS4BMS-EDEMO-SC-D
Compare (0)