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101% Original
Lowest Price
Fast Shipping
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Glock 21

Glock 21 Gen 5 MOS 45 ACP OEM Complete Slide Assembly – Includes Recoil Spring and Barrel – NEW

Original price was: $529.99.Current price is: $489.99.

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Glock 21 Gen 5 MOS 45 ACP OEM Complete Slide Assembly – Includes Recoil Spring and Barrel – NEW

Upgrade your Glock 21 with this Factory OEM Complete Slide Assembly for the Gen 5 MOS model, chambered in .45 ACP. This complete upper includes the slide, barrel, and recoil spring assembly, fully assembled and ready to drop onto your Glock 21 Gen 5 frame. Featuring the Modular Optic System (MOS), it’s ready for your favorite red dot or optic.

Key Features:

  • Complete Glock 21 Gen 5 Slide Assembly – Factory-installed barrel and recoil spring assembly for quick installation.
  • Chambered in .45 ACP – Built for serious stopping power and smooth performance.
  • Gen 5 MOS Compatibility – Designed to fit Glock 21 Gen 5 frames with Modular Optic System cut for red dot optics.
  • OEM Quality – Manufactured by Glock for factory-grade reliability, precision, and durability.
  • Brand New – Never fired or modified. 100% original Glock factory condition.

Specifications:

  • Model: Glock 21
  • Generation: Gen 5
  • Caliber: .45 ACP
  • Includes: Complete Slide, Factory Barrel, Recoil Spring Assembly
  • Finish: Black nDLC
  • Condition: Brand New OEM Part

Purchase & Shipping Information:

  • Non-Serialized: Ships directly to you—no FFL required.
  • Fast Shipping: USPS Priority Mail within 1 business day of payment for secure, trackable delivery.
  • Compatibility: Only compatible with Glock 21 Gen 5 frames. Not for Gen 4, Gen 3, or other models.

Whether you’re building from the frame up or replacing your upper, this Glock 21 Gen 5 MOS OEM Slide Assembly delivers top-tier performance, reliability, and red-dot readiness.

Order now—inventory is limited!

Please review the following shipping and order details before completing your purchase.

Fast Shipping: Orders ship via USPS Priority within 1 business day of payment receipt for fast and reliable delivery.

Order Accuracy: Please ensure your shipping address is entered correctly at checkout. We are not responsible for delays or delivery issues caused by incorrect or incomplete address information.

Compatibility: It is the buyer’s responsibility to verify compatibility with their specific firearm or build prior to purchase. If you are unsure, please contact us before ordering.

Installation: Installation may require fitting or adjustment. Professional gunsmith installation is recommended where applicable.

Disclaimer: By placing an order, the customer confirms that all information provided is accurate. Any costs associated with correcting shipping errors, including return shipping or applicable restocking fees, are the responsibility of the customer.

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