Description

Glock 21 Gen V MOS .45 ACP OEM Complete Slide Assembly – Includes Recoil Spring and Barrel – NEW

Upgrade your Glock 21 with this factory OEM complete slide assembly designed specifically for the Glock 21 Gen V MOS platform. Chambered in .45 ACP, this complete upper includes the slide, factory barrel, and recoil spring assembly—fully assembled and ready for installation with no aftermarket components.

Featuring Glock’s Modular Optic System (MOS), this slide is optic-ready and allows mounting of compatible red dot optics using factory adapter plates while maintaining OEM fit, reliability, and performance.

Key Features:

• Complete Glock 21 Gen V MOS Slide Assembly – Factory-installed barrel and recoil spring assembly for true drop-in installation.
• Chambered in .45 ACP – Designed for dependable power, smooth cycling, and consistent accuracy.
• Gen V MOS Compatibility – Engineered exclusively for Glock 21 Gen V frames with factory MOS optic cut.
• OEM Glock Quality – Manufactured by Glock to factory standards for precision, durability, and reliability.
• Brand New – Never fired, never modified, and 100% original Glock factory condition.

Specifications:

• Model: Glock 21 Gen V MOS
• Caliber: .45 ACP
• Includes: Complete slide, factory barrel, recoil spring assembly
• Finish: Black nDLC
• Condition: Brand New OEM Part

Purchase & Shipping Information:

• Non-Serialized: This slide assembly is not a serialized component and does not require an FFL.
• Fast Shipping: Ships via USPS Priority within 1 business day after payment for fast, secure delivery.
• Compatibility: Compatible only with Glock 21 Gen V MOS frames. Not compatible with Gen 3 or Gen 4.

Whether you’re building from the frame up or replacing an existing upper, this Glock 21 Gen V MOS OEM Complete Slide Assembly delivers factory reliability, optic readiness, and .45 ACP performance.

Order now—inventory is limited!