Squat Squad, here’s one for the folks who keep swapping red dots and buying a new mount every time. KDG (Kinetic Development Group), the company behind the SideLok quick-detach mounts, just launched the BOM Series. It’s a bolt-on hard mount that comes with two optic heights in the box, uses interchangeable top plates for different red dot footprints, and includes what KDG calls the only rifle mount currently available for the Aimpoint COA.
Quick note: this article is based on KDG’s press release and its product pages. We haven’t had a BOM mount on a rifle yet.
TL;DR
- What it is: a traditional hard mount (not quick-detach) for red dots.
- Two heights: 1.57″ as-is, or 1.93″ with the included riser block.
- Interchangeable top plates: change optics later without replacing the whole base.
- Launch footprints: Aimpoint ACRO, Aimpoint COA (A-CUT), Aimpoint Micro T-1/T-2 and Trijicon RMR.
- Build: aluminum body with a steel clamp.
- Availability: KDG says the BOM Series is shipping to dealers and distributors now.
- Coming in 2027: more red dot footprints in Q1 2027, plus 30mm and 34mm tube versions in development.
SideLok vs. BOM: two different jobs
KDG made its name with SideLok, a tool-free quick-detach system. The idea there is that you zero several optics for the same rifle and swap between them. Red dot for close work, magnified optic for distance, and KDG says each one returns to zero when it goes back in the same spot.
The BOM Series goes the other way. It’s a bolt-it-on-and-forget-it hard mount for people who never plan to pull the optic off. KDG describes it as the rugged alternative to SideLok: you give up quick-detach convenience and get a permanent lockup in return. The modular part is in the height and the footprint, not in how fast the optic comes off.
Key features
- Optic height: 1.57″ without the block, 1.93″ with the included lift block. KDG pitches the taller setting for night vision, a gas mask, or just a more heads-up shooting position.
- Top plates: each mount ships with one footprint plate, and KDG sells standalone top plates so you can switch optics later and keep the same base.
- Materials: lightweight aluminum base and riser with a steel clamp.
- Initial versions: BOM ACRO, BOM COA (A-CUT), BOM Micro and BOM RMR.
The Aimpoint COA angle
This is the part that caught my eye. The Aimpoint COA uses Aimpoint’s A-CUT interface, which is not the same as the ACRO footprint. That has made it tough to put a COA on a rifle, since most mounts on the market are built around other footprints. KDG says its BOM Series COA (A-CUT) mount is currently the only rifle mounting solution available for the COA, and it gets the same 1.57″/1.93″ height options as the rest of the line. If you have a COA and want it on a carbine or a PCC, now there’s at least one option.
Who it’s for
- Red dot hoppers who keep changing optics and are tired of buying a new base every time.
- Night vision users who want the taller 1.93″ height without buying a separate mount.
- Aimpoint COA owners who want to run that dot on a rifle.
- Set-and-forget shooters who want a hard mount, not a quick-detach lever.
Our take
Getting two heights in one box makes a lot of sense to me. Most of us don’t know whether we’ll like 1.57″ or 1.93″ until we’ve run both, and normally that means buying two mounts. The swappable top plates are the other smart move, since red dot footprints keep changing and the base is the part you shouldn’t have to replace. The COA mount is the most interesting piece because it fills a real gap. What I’d still want to see is the BOM holding zero after a few thousand rounds and a couple of plate swaps, because that’s the whole promise of a hard mount. If you want to move optics between rifles, SideLok is still the KDG product built for that. If the dot is staying put, BOM is the one to look at.
Where to find it
KDG sells both lines directly: the BOM Series optic mounts (including the BOM COA mount) and the SideLok quick-detach mounts. KDG says dealers are getting stock now, so check availability for your footprint before you order.
Related reading on SlavGuns
- Warne Universal Receiver Red Dot Mount: Put a Red Dot Straight on Your Drilled-and-Tapped Shotgun
- Axeon Second Zero Review: A Flip-Up Prism for a One-Click 330 Yard Zero
- Sightmark First Look: Volta and Element Mini Solar Red Dots, Citadel 1-10x and Wraith 4K
Sources
- Press release via The Outdoor Wire: KDG Continues to Redefine Optic Mount Innovation with SideLok and the New BOM Series
- KDG: BOM Series optic mounts, BOM COA mount product page and SideLok optic mounts
Which height do you run your red dot at, 1.57″ or 1.93″? Let me know in the comments. Keep on squatting!
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