Leapers UTG PRO RBUS4BM AR‑15 Ops Ready S4 Mil‑Spec Stock Kit

Compact Heavy‑Duty Mil‑Spec Stock System for AR‑15/SBR

The UTG PRO RBUS4BM is a complete stock kit for AR‑15 and SBR platforms. Designed and made in the USA from impact‑resistant matte black polymer, it offers a minimal bulk profile with full operational functionality.

Product Details

• Material: High‑strength impact‑resistant matte black polymer
• Feature: Ultra‑compact 4.28 in length, four‑position adjustability for optimal shoulder weld, ideal with plate carriers
• Included components: Mil‑spec extension tube, buffer, buffer spring, receiver end plate and castle nut
• Comfort elements: Ergonomic cheek rest with removable extended insert (5.51 in), rubberized butt pad
• Sling options: Reversible sling swivel housing and a standard sling loop

Advantages

• Exceptional compactness with full function – perfect for tight CQB setups
• Adjustable length of pull adapts to wearing of load‑bearing gear
• Optional extended cheek rest for enhanced shooting comfort
• Made in the USA – complete, ready‑to‑fit kit