Leapers/UTG Pro Model 4 Ops Ready S1 Mil-Spec Stock Kit Black (RBUS1BM)

Leapers/UTG Pro Model 4 Ops Ready S1 Mil-Spec Stock Kit Black (RBUS1BM)


146 in stock

SKU: UTGRBUS1BM Categories: ,

The UTG PRO Model 4 Ops Ready S1 Mil-spec Stock Kit comes with everything you need to attach this stock to your lower receiver, so that you can get your AR-15 up and running!  The UTG Pro stock kit includes a 6-position adjustable stock, mil-spec diameter buffer tube, lower receiver end plate, castle nut, action spring as well as a buffer.  This kit is extremely well made and is sure to be the perfect kit to finish off your AR-15 lower receiver build.


UTG Pro Model 4 Ops Ready S1 Stock

The UTG Pro S1 stock is a high quality stock that packs in a lot of features.  This stock was designed from the start to give you a durable, reliable, and high quality AR-15 stock.  With this in mind, the stock was primarily made from a high-impact, and incredibly durable polymer.  This allows the stock to have tight tolerances to make for a snug fit to your mil-spec receiver extension tube to minimize stock rattle


Rubber Butt Pad

The stock has a built-in rubber butt pad.  This rubberized end piece has multiple functions.  First, the rubber pad can help to mitigate shock forces, should your rifle impact an object.  The rubber also helps to gab onto your shoulder, providing a slip-resistant surface.  This helps to minimize stock movement during firing or shouldering the rifle.



The stock was designed to be sleek and streamlined.  The front and rearmost portions of the stock has been chamfered.  This helps to minimize the change of snagging your stock on and object. 


Comfortable Cheek Rest

The stock features a slated cheek rest surface.  The increased the surface area available for you to rest your cheek on the stock.  This makes more a more comfortable shooting platform.



The stock has two integrated storage compartments.  Along either side of the stock, there are battery storage tubes.  These tubes are large enough to house up to 3x CR123 batteries each.  The storage tubes can also house other small accessories, spare parts, or tools.


Sling Mounts

To make sling integrate easier, the Ops Ready stock has integrated sling mounts.  At there rear of the stock, there are integrated QD sling swivel sockets.  These sockets are mounted on the left, as well as the right side of the stock.  This allows the stock to be used by either left or right handed shooters.


Buffer/Receiver Extension Tube

The UTG Pro Stock kit comes with a buffer tube.  The buffer tube is mil-spec diameter and is precision machined from an aircraft grade aluminum.  The aluminum tube is finished with a black anodized hard coat for increased wear & corrosion resistance.  The receiver extension tube has rolled thread to help ensure an optimal fit in your lower receiver.  

Additional information

Weight3 lbs
Part #



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