H&K A3 Retractable Rear Stock Fits H&K MP5/SP5/HK94, Black

The Heckler & Koch HK 227901 SP5 three-position buttstock delivers a versatile, field-ready upgrade for the MP5 platform, combining a compact profile with adjustable length of pull to tailor fit and balance across a range of shooting positions. Designed for reliable operation and rapid adjustments, the 3-position retractable stock provides users with enhanced control, improved cheek weld, and consistent repeatability during rapid fire or precision follow-through, making it an ideal choice for duty, competition, or leisure use. Built to endure demanding environments, this stock integrates smoothly with compatible MP5 receivers, offering secure locking and a solid, wobble-free feel under recoil while maintaining a low-profile silhouette for simplified handling in tight spaces. Its ergonomic design supports a natural shoulder transition and steadier sight picture, helping shooters maintain accuracy from kneeling to prone stances. For those upgrading or replacing existing stock components, the HK SP5 stock pairings are engineered to preserve reliable cycling and cycling clearance, ensuring a cohesive integration with the firearms overall balance and performance. Whether optimizing for speed, stability, or shooter comfort, this stock enhances control without compromising the MP5s compact, maneuverable character.