The Ultimate Hard Mount Solution for Your COA Your red dot shouldn't move. Ever. The KDG BOM Series is a hard mount built for shooters who are done worrying about zero shift. Designed as a rugged alternative to our Quick Detach Sidelok line, the BOM swaps quick-detach convenience for a permanent, bolt-on lockup - and it doesn't budge. What Makes the KDG BOM Series Stand Out? Adjustable Optic Heights: Run it stock at 1.57" or drop in the included lift block for 1.93" - the height you want when you're running night vision, a gas mask, or just a more heads-up posture. Interchangeable Top Plates: This one ships with the COA plate. Switch optics later and you don't need a new base - just grab the standalone top plate for DPP, ACRO, RMR, or Micro. Hybrid Construction: Aluminum body to keep weight off your rifle, steel clamp to keep your optic exactly where you put it. Hard Mount Reliability: Built to take recoil and abuse without shifting zero. That's the whole job, and it does it. Why Choose the BOM Optic Mount? Future-Proof Your Rifle: Change optics, swap the plate, keep shooting. No new base mount required. Two Heights in One Box: Test 1.57" and 1.93" with the included riser block and hardware sets - figure out what actually works for you. Uncompromising Lockup: Steel clamp, real rail tension, no compromise.