Glock 39709 Backstrap/Beavertail Set Gray Polymer

The Glock 39709 Backstrap/Beavertail Set in gray polymer gives you a simple way to customize your Glock's grip and feel without gunsmithing. Whether you're fine-tuning a carry gun, match pistol, or range shooter, swapping backstraps and a beavertail lets you dial in the grip angle and hand position that works best for your shoot. Gray polymer construction matches standard Glock aesthetics and holds up to hard use.

Factory Glock backstraps and beavertails are modular by design—they fit into the frame's grip cavity and palmwell area to adjust how the gun sits in your hand. A larger backstrap fills out the grip for shooters with bigger hands or those who run a high grip; a smaller one suits shorter fingers or a lower hand position. The beavertail reduces the gap between your grip and the trigger guard, improving control and reducing felt recoil. Together, they let you tailor the ergonomics of your pistol without permanent modification.

This is genuine Glock factory polymer, so it meets the same durability and finish standards as OEM parts. It's a cost-effective upgrade for shooters who want a better fit, faster target reacquisition, or reduced hand fatigue during longer range sessions or competition practice. Works as a replacement if an original part wears or breaks, or as an addition if you run multiple Glocks with different hand sizes in your household or team.

Key Features

• Gray polymer backstrap and beavertail set for ergonomic customization
• Factory Glock OEM construction and durability
• Adjusts grip angle and palmwell fit without permanent modification
• Reduces gap between grip and trigger guard for improved control
• Easy swap—no tools or gunsmithing required

Frequently Asked Questions

What Glock models does the 39709 backstrap and beavertail set fit?

The 39709 is a Glock factory part designed for specific Glock models. Check your Glock's manual or contact Glock directly to confirm compatibility with your serial number and frame generation, as backstrap and beavertail compatibility can vary between generations and frame sizes.

Do I need tools to install the backstrap and beavertail?

No. Glock backstraps and beavertails are designed to swap by hand—no gunsmithing or special tools required. The parts slide into the grip cavity and palmwell. Follow Glock's installation guide to ensure proper seating.

Is this a replacement part or an upgrade?

It can be either. If your factory backstrap or beavertail is worn or damaged, this set serves as a replacement. If you're looking to change your grip feel or fit, it works as an upgrade or customization for a gun that already has OEM parts installed.

What's the difference between sizes of backstraps?

Glock offers backstraps in different sizes to accommodate different hand sizes and grip preferences. A larger backstrap fills out the rear of the grip; a smaller one is slimmer. The beavertail in this set affects the palmwell cut. The right fit depends on your hand size, grip angle preference, and shooting style.