FU Blacked Out Optic Height Iron Sights for Glock G43/42/43X/48 MOS

Upgrade your Glock slimline pistol with Freedom Unlimited Blacked Out Optic Height Iron Sights, precision-machined for durability, reliable performance, and a clean, distraction-free sight picture. These aftermarket Glock iron sights feature an all-black, no-dot design with an elevated sight profile, making them an excellent choice for everyday carry, target shooting, and custom Glock builds equipped with red dot optics.

Constructed from durable 4140 steel with a corrosion-resistant black nitride finish, these Glock front and rear iron sights offer rugged construction and long-lasting reliability. Designed for compatible Glock slimline MOS and optic-cut slides, the optic-height configuration provides an elevated sight picture and backup iron sight capability with compatible slide-mounted red dot optics. Whether replacing factory sights or completing a custom Glock slide assembly, Freedom Unlimited Blacked Out Iron Sights provide a dependable upgrade.

Features

• Durable 4140 Steel Construction – Precision-machined steel provides strength, durability, and long-term reliability.

• Blacked Out Sight Design – All-black front and rear sights without dots or inserts provide a clean, distraction-free sight picture.

• Optic Height (.305″ Front Sight) – Elevated sight profile designed for lower-third co-witness with compatible slide-mounted red dot optics.

• Red Dot Co-Witness Capability – Provides backup iron sight visibility through compatible red dot optics. Actual co-witness height varies depending on optic and mounting configuration.

• Black Nitride Finish – Corrosion-resistant, non-reflective finish complements factory and aftermarket Glock slides.

• Consistent Sight Picture – Designed for reliable sight alignment and precision aiming.

• MOS-Specific Design – Features a .125″ wide rear notch and shortened front ledge designed to accommodate compatible optic-cut slides.

• Slimline Glock Compatibility – Designed for compatible Glock 42, 43, 43X MOS, and 48 MOS slide configurations.

• Complete Front & Rear Sight Set – Includes both Glock iron sights with mounting screws.

• Ideal for Glock Upgrades & Custom Builds – Suitable for replacing factory sights or completing compatible Freedom Unlimited Glock slimline slide assemblies.

Sight Dimensions – Optic Height

• Front Sight Height: .305″

• Rear Sight Height: .310″

• Rear Sight Notch Width: .125″

Glock Compatibility

Designed for compatible Glock slimline models equipped with factory-style sight cuts, including:

• Glock 42

• Glock 43

• Glock 43X MOS

• Glock 48 MOS

Designed for compatible factory MOS and aftermarket optic-cut slimline slides with matching sight cuts.

Co-witness compatibility varies depending on the red dot optic and mounting plate configuration.

Package Includes

• 1 × Front Iron Sight with screw

• 1 × Rear Iron Sight with screw

Note: Installation by a certified gunsmith is recommended.