The American Defense AD-B2 cantilever mini ACOG mount solves a real problem: stock eye relief on compact prism scopes can leave your cheek uncomfortably close to the charging handle or leave you hunting for the sight picture. This one-piece cantilever mount pushes your optic rearward and up, giving you the eye relief and shooting geometry that makes sense for AR pistols, short-barreled rifles, and precision rifles running compact magnified sights. If you're pairing a 1.5–3x Mini ACOG (TA33, TA44) or similar compact prism scope with a modular rail system, the AD-B2 is purpose-built to get your glass in the right spot.

Built from 6061 T6 aluminum and finished in mil-spec hard anodize, this mount is tough enough for serious field use. The 0.75-inch reverse cantilever geometry is the whole point—it lets you position the eyepiece far enough back that you can actually shoulder the gun and find the reticle without contorting your head. The patented QD auto lock titanium lever system clamps securely to both in-spec and out-of-spec Picatinny rails, which matters if your upper receiver's tolerances aren't factory perfect.

Setup is straightforward: no proprietary tools required. Adjust the fit with your finger or a flat-blade screwdriver, and rotate the lever to lock from the front or rear—whichever orientation works for your gun and your reach. The mount is compatible with aftermarket spacers if you need to fine-tune height, so you can dial in the perfect cheekweld and sight picture without experimenting with every optic on the shelf.

The American Defense AD-B2 cantilever mini ACOG mount solves a real problem: stock eye relief on compact prism scopes can leave your cheek uncomfortably close to the charging handle or leave you hunting for the sight picture. This one-piece cantilever mount pushes your optic rearward and up, giving you the eye relief and shooting geometry that makes sense for AR pistols, short-barreled rifles, and precision rifles running compact magnified sights. If you're pairing a 1.5–3x Mini ACOG (TA33, TA44) or similar compact prism scope with a modular rail system, the AD-B2 is purpose-built to get your glass in the right spot.

Built from 6061 T6 aluminum and finished in mil-spec hard anodize, this mount is tough enough for serious field use. The 0.75-inch reverse cantilever geometry is the whole point—it lets you position the eyepiece far enough back that you can actually shoulder the gun and find the reticle without contorting your head. The patented QD auto lock titanium lever system clamps securely to both in-spec and out-of-spec Picatinny rails, which matters if your upper receiver's tolerances aren't factory perfect.

Setup is straightforward: no proprietary tools required. Adjust the fit with your finger or a flat-blade screwdriver, and rotate the lever to lock from the front or rear—whichever orientation works for your gun and your reach. The mount is compatible with aftermarket spacers if you need to fine-tune height, so you can dial in the perfect cheekweld and sight picture without experimenting with every optic on the shelf.