AR-9mm 6-Position Collapsible Stock Kit with 7oz Stainless Buffer, Blackhawk Knoxx Stock – Mil-Spec

Knoxx Stock Kit: What's Included

Upgrade your AR-9MM with this complete Blackhawk Knoxx 6-Position Collapsible Stock Kit, designed for enhanced control and compatibility with blowback 9MM systems. The included 7oz stainless steel buffer provides the necessary mass for reliable cycling and reduced felt recoil, ideal for AR-9 configurations.

This kit is built around a mil-spec buffer tube and features the trusted Blackhawk Knoxx adjustable stock, offering durability, comfort, and tactical adaptability. All components are precision-fit and designed for straightforward installation on standard AR-9 and AR-15 lower receivers.

Kit Includes:

• Blackhawk Knoxx M4-style 6-position collapsible stock, black finish

• Mil-spec AR-15 carbine buffer tube

• Stainless steel 7oz buffer, optimized for AR-9 blowback systems

• Carbine-length stainless steel buffer spring

• Standard AR-15 castle nut

• AR-15 end plate

Key Features:

• Compatible with all standard AR-9 and AR-15 receivers

• Six-position adjustable stock for custom fit and handling

• Heavy buffer ensures smoother blowback operation in 9MM builds

• All parts meet or exceed mil-spec standards

• Quick installation and solid lock-up

• Made in the USA by trusted manufacturers

Complete your build with a matching Moriarti AR-9MM 16-Inch Upper Receiver Assembly for maximum performance.

FAQ

Why use a heavy buffer in a PCC?

Blowback pistol-caliber ARs have no gas system to slow the bolt, so a heavier buffer reduces bolt bounce, wear and felt recoil.

Related: PCC stocks & buffers · pistol caliber carbines

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