4 Deg Wedge Shim

The 4 Deg Wedge Shim by Lakewood is a precision-engineered mounting accessory designed for tactical shooters and military professionals who require exact optic alignment and rail cant correction. This specialized shim addresses the common challenge of achieving true zero on rifles equipped with canted or misaligned Picatinny rail systems, where even minor angular deviations can compound into significant point-of-aim shifts at distance.

Engineered to provide a precise 4-degree wedge correction, this shim installs between the Picatinny rail and your optic mount to eliminate cant while maintaining zero repeatability. The lightweight 0.5-pound design adds negligible mass to your system, ensuring that it does not affect the overall balance of your firearm. By correcting rail misalignment before it affects your sight picture, the shim enables shooters to achieve true optical zero without mechanical compensation.

Law enforcement and military armorers benefit most from this accessory when assembling service rifles with new uppers or rail systems of questionable manufacturing tolerance. Installation is straightforward: place the shim on the rail, mount your optic, and achieve the desired alignment for consistent shot placement and reliability in the field.