This Shepard Arms Custom Glock 21 Gen3 is a heavy-hitting .45 ACP powerhouse, fully optimized for those who demand superior recoil management and precision optics integration.
Built on the rugged Gen3 platform, this pistol has been transformed through extensive slide machining and high-end component selection to create a high-performance tactical sidearm.
Every modification was engineered to balance the substantial caliber of the G21 with modern speed and flat-shooting characteristics, making it an ideal choice for home defense or a premium heavy-caliber range build.
The pistol is topped with a Holosun 507 Ronin (Green Dot) for rapid, high-contrast target acquisition and paired with a Holosun PID PLUS weapon light/laser combo for total environmental control.
Key Features
Custom Shepard Arms Slide Machining The OEM slide has been precision-milled with weight-reduction windows and front porting. This reduces reciprocating mass for flatter shooting and provides aggressive forward serrations for positive manipulation in all conditions.
Optic-Cut Integration Direct-milled to accommodate the Holosun 507 Ronin GR, ensuring a low-profile, rugged mount that holds zero under the heavy impulse of .45 ACP.
Professional Performance Grip Package The frame features a comprehensive high-traction stipple pattern. This enhanced texture provides exceptional friction and control, allowing the shooter to maintain a dominant grip during rapid strings of fire.
Holosun 507 Ronin GR & PID PLUS
Optic: Features the crisp Green Circle-Dot reticle for faster "eye-box" pickup.
Light/Laser: The PID PLUS delivers high-candela white light paired with a precision aiming laser for versatile low-light engagements.
Overwatch Precision Trigger Equipped with a flat-face Overwatch Precision trigger shoe, providing a repeatable finger index, reduced pre-travel, and a crisp, duty-rated break.
Match-Grade Threaded & Crowned Barrel A custom-finished barrel featuring a precision crown for accuracy and threading for suppressor or compensator compatibility.
Night Fision Suppressor Height Sights Tritium-infused sights designed to provide a perfect co-witness through the Holosun optic for fail-safe aiming.
Included With Purchase
Shepard Arms Custom Glock 21 Gen3
Holosun 507 Ronin GR Optic (installed)
Holosun PID PLUS Light/Laser (installed)
13-Round Standard Capacity Magazine
Premium Evolution Tactical Soft Case
Plush protective interior
Dedicated storage for magazines and accessories
Superior protection for transport
Why Choose Shepard Arms?
Based in Menomonee Falls, WI, Shepard Arms specializes in premium firearm customization and performance upgrades. Each build is carefully curated, assembled, and inspected to ensure top-tier reliability.
White Glove Standard: Nothing leaves our shop without being thoroughly inspected and function-tested. We take pride in our work so you can have total confidence in your equipment.
