Stern Defense .45 ACP Bolt Carrier Group – BU45 – For Glock Magazine AR Uppers

The Stern Defense BU45 Bolt Carrier Group is engineered for AR-style rifles chambered in .45 ACP that utilize Glock-pattern magazines. Designed for reliability and smooth cycling, this bolt is built specifically for pistol caliber AR platforms using Glock-cut uppers and magazine systems.

Precision machined for proper fit and dependable performance, the BU45 bolt is built to handle the demands of .45 ACP blowback-operated AR builds. It is designed to function with Glock-pattern .45 ACP magazines, making it an ideal component for custom pistol caliber carbine builds or replacements.

Manufactured with durable materials and finished for long-lasting wear resistance, the Stern Defense bolt carrier group is built for consistent function whether used for range shooting, training, or PCC competition setups.

Key Features

• Designed for AR-platform rifles chambered in .45 ACP
• Compatible with Glock-pattern .45 ACP magazines
• Works with Glock-cut AR uppers
• Precision machined for reliable operation
• Built for pistol caliber carbine builds and upgrades
• Durable construction for long service life
• Model BU45 by Stern Defense