Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Enjoy free shipping during the holidays! Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.

Enjoy Our Extended FREE RETURNS

We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later). We'll even cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
ZEV Technologies Fulcrum 10mm SF Adjustable Glock Trigger Upgrade Drop-In Kit, 1st-4th Gen
Currently Unavailable View Product
Compare (0)

Does in fact fit a Glock 40

by Alan, Verified Owner from CA, United States Written on August 7, 2022
Trigger made a significant improvement to the gun’s performance. Pull is smooth, weight reduced, and has a clean break. Trigger pull weight went down from close to 7lbs. to 5lbs. Tried a lighter return spring to reduce weight even more but had trouble with trigger resetting - spring with kit sufficed….Worth the money.
Would recommend: Yes
Was it helpful to you? Yes | No