Lone Wolf Timberwolf Large TWL-1 Frame (Large/Large Grip) – Bare

The Lone Wolf Timberwolf Large TWL-1 frame upgrades the ergonomics of your GLOCK®-pattern pistol without giving up the reliability of the platform. It combines a large-frame slide on a slimmed large-frame grip built for 10mm and .45 ACP, with a 1911-style grip angle that feels and points like a much smaller pistol.

Lone Wolf slimmed the large-frame grip down to nearly the same circumference as a typical 9mm service pistol, so you get 10mm or .45 ACP power in a grip that fits average hands. It accepts GLOCK® G20 and G21 (Gen 3 and Gen 4) and G40 slides, and a removable dust cover adapter lets you run either generation: leave the adapter in for Gen 3 slides, or remove it for Gen 4.

This listing is the bare frame, ideal for builders who want to choose their own trigger and internals or complete it with a Lone Wolf Timberwolf completion kit.

Key Features

• 1911-style grip angle for natural point of aim
• Textured grip with interchangeable backstraps (shared between TWF and TWL frames)
• Removable magazine well
• Dust cover adapter for Gen 3 and Gen 4 slide compatibility
• Reversible Gen 4-style magazine catch for left- or right-hand use
• Accessory rail for lights and lasers

Specifications

• Brand: Lone Wolf Arms
• Model: Timberwolf Large (TWL-1)
• SKU: LWD-TWL1-BARE
• UPC: 639737071795
• Configuration: Bare (no parts installed)
• Color: Black
• Slide length: Large
• Grip length: Large
• Slide compatibility: GLOCK® G20 and G21 (Gen 3 and Gen 4) and G40
• Calibers supported: 10mm Auto and .45 ACP
• Magazines: G20/G21 magazines
• FFL required: Yes

Compatibility

Designed for GLOCK® G20 and G21 (Gen 3 and Gen 4) and G40 slides. Not compatible with G41 slides or any Gen 5 slides, and not compatible with SideLock-style trigger safeties. Most lower parts are Gen 3 style, but this frame requires a Gen 4-style magazine catch and trigger housing. Customer feedback indicates some trigger upgrades may need minor fitting because of the frame’s tight tolerances.

What’s Included

• Bare Timberwolf Large frame
• Dust cover adapter, removable magwell and interchangeable backstraps

No lower parts are installed. Complete it with the matching Lone Wolf frame completion kit, or with your own parts following the compatibility notes above.

Frequently Asked Questions

Does the bare frame include a parts kit?

No. It ships without lower parts. Add the matching Lone Wolf completion kit or source your own compatible parts.

Will it work with Gen 4 slides?

Yes. Remove the dust cover adapter to run a Gen 4 slide, or leave it installed for a Gen 3 slide.

Does it fit a Glock 41 or Gen 5 slide?

No. The TWL is not compatible with G41 slides or Gen 5 slides.

How does this frame ship?

Frames are regulated as firearms in the U.S., so this item must ship to a licensed FFL dealer, and buyers must be 21 or older. Provide your FFL’s details at checkout.

Can I return it?

FFL items are generally not returnable once transferred. Please confirm compatibility before ordering.

Shipping & Compliance

This frame must be shipped to a federally licensed firearms dealer (FFL). Buyers must be at least 21 years old and are responsible for following all federal, state and local laws where they live.

Disclaimer: This product is made by Lone Wolf Arms and is not manufactured, authorized, endorsed or warranted by GLOCK, Inc. or GLOCK Ges.m.b.H. GLOCK® is a registered trademark of GLOCK, Inc., used here only to describe compatibility. We are not affiliated with GLOCK.