DSI Carbine Buffer Spring – AR-15 Mil-Spec 5.56

Description

The DSI Carbine Buffer Spring is built for shooters who demand reliability, durability, and consistent cycling from their AR-15 platform. Precision-manufactured from mil-spec 17-7 stainless steel, this spring is heat treated to military standards and electropolished to reduce friction, resulting in smoother operation and longer service life compared to standard piano-wire springs.

Designed specifically for carbine-length buffer systems, this spring provides optimal tension and controlled bolt carrier movement to ensure dependable feeding, extraction, and lockup across a wide range of .223 / 5.56 ammunition. Whether you’re assembling a duty rifle, upgrading a defensive carbine, or replacing worn components, the DSI Carbine Buffer Spring delivers consistent performance under hard use.

Proudly made in the USA using high-grade American materials, this buffer spring is a reliable foundation for any AR-15 build focused on long-term durability and smooth cycling.

Technical Specifications

• Platform: AR-15

• Caliber Compatibility: .223 / 5.56

• Buffer System: Carbine Length

• Material: 17-7 Stainless Steel (mil-spec)

• Heat Treatment: Mil-Spec

• Finish: Electropolished

• Approximate Length: 11.0 inches

• Country of Origin: USA