Precision drilling is essential when building or customizing an AK platform firearm, and the AK-Builder AK Trunnion Rivet Hole Drilling Fixture delivers the accuracy you need for professional results. This compact, color-coded fixture simplifies the task of locating and drilling rivet holes in both front and rear trunnions, ensuring proper alignment for secure riveting every time. Specifications Overall dimensions: 3 in (L) x 4 in (W) x 0.25 in (H) Weight: 1.5 lbs Caliber-specific guides: Red (7.62mm), Blue (5.45mm) Compatible with common AK trunnion riveting tasks