Utg Pro Model4 S1 Stk Kit Ml-spc Blk

The UTG PRO Model4 S1 Mil-Spec Black Butt Stock Kit is a six-position collapsible stock designed for AR-15 and M4 platform rifles. Built from high-impact polymer with weather-resistant properties, this stock delivers the tightest tolerances and quietest operation demanded by shooters who run suppressed or operate in noise-sensitive environments. The precision-fit rolled threads engage mil-spec buffer tubes with zero rattle—critical for operators who depend on consistent cheek weld and zero shift between practice and duty.

The reversible Quick-Detach sling swivel housing accommodates both single-point and two-point configurations without tools, making this stock flexible enough for patrol carbines, entry weapons, and training platforms. The thick rubberized recoil pad absorbs impact energy and prevents slippage during sustained fire or rapid transitions. Six adjustment positions allow shooters to dial in length-of-pull for body armor, plate carriers, or bare shoulder—a non-negotiable feature for units rotating between different combat loads or running carbine courses with mixed roster sizes.

This kit suits law enforcement duty carbines, private security AR-15 builds, 3-gun competitors, and military-adjacent training environments where durability and silent operation trump cosmetics. The Leapers, Inc. UTG PRO line has earned reputation in the mid-tier tactical market for consistency and value—delivering mil-spec performance without boutique pricing. Weight at 1.81 lbs keeps the platform balanced and reduces fatigue during extended operations or training days where every ounce compounds over eight-hour shifts.