REMINGTON AP4 MIL-SPEC COLLAPSIBLE CARBINE STOCK FOR AR-15 The AP4 Mil-Spec Collapsible Carbine Stock (Black) is a proven, battle-tested design engineered for AR-15 carbines that demand reliability and simplicity. Built from high-strength, impact-resistant polymer, this stock delivers a solid shoulder weld, smooth adjustment, and dependable performance in harsh conditions. Its mil-spec diameter ensures perfect fitment on standard carbine receiver extensions, making it an ideal replacement for worn OEM stocks or a dependable choice for new builds. With its streamlined M4 profile, reinforced adjustment latch, and textured buttplate, the AP4 stock provides excellent control during rapid fire while keeping weight to a minimum. Whether you’re assembling a duty rifle, range carbine, or lightweight defensive build, this stock offers the durability and ergonomics shooters trust. FEATURES Mil-Spec Diameter Fitment — Compatible with all standard AR-15 mil-spec carbine buffer tubes for secure, wobble-free installation. AP4/M4-Style Design — Classic, proven profile used on countless carbines for dependable handling and familiar ergonomics. High-Strength Polymer Construction — Impact-resistant, lightweight, and built to withstand hard use in field, duty, or training environments. Six-Position Adjustability — Quick, positive length-of-pull changes for shooters of all sizes and gear setups. Textured Buttplate — Provides a stable, non-slip shoulder weld for improved recoil control and faster follow-up shots. Reinforced Adjustment Latch — Durable steel hardware ensures reliable lock-up and long service life. Black Matte Finish — Low-glare, tactical appearance that complements any AR-15 build. Drop-In Installation — Installs in minutes on any mil-spec carbine receiver extension—no gunsmithing required. Ideal for New Builds or Upgrades — Perfect replacement for OEM stocks or for completing a lightweight, duty-ready AR-15. NOTE: These items are a new, authentic products acquired directly from Remington’s OEM inventory. This item is guaranteed to be unused and fully functional.