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The Leupold Mark 4 IMS 20 MOA Integral Rail Insert is the piece that turns a standard IMS setup into a dedicated long-range rig. It drops into the Mark 4 IMS integral base and adds 20 minutes of angle to your scope mount, which effectively tips the rear ring up and gives your optic more usable elevation when you're reaching way out there. If your turret has ever bottomed out before you got to your target's drop, this is the part that fixes it.
Think of this as the elevation upgrade for the IMS platform. Running a flat zero-cant mount at distance means your scope can run out of internal travel before the bullet does, and that's where the 20 MOA angle earns its keep. By canting the mount, you shift your zero point lower in the scope's adjustment range, leaving more room up top to dial for serious holdover. It's machined from aircraft-grade aluminum and wears a matte black finish that matches the rest of the Mark 4 lineup.
Here's the important part: this is an insert, not a complete mount. It bolts into the Leupold Mark 4 IMS integral base, which is sold separately, using 1/4-32 screws. It will not mount to your rifle on its own or work with any other base system. If you already run the Mark 4 IMS base, swapping to this 20 MOA insert is a quick job that keeps the forward cantilever design intact for proper eye relief and a full field of view on AR-style rifles.
Leupold backs it with their Full Lifetime Guarantee, and like the rest of the Mark 4 family it's built to take a beating in the field. For anyone shooting past the point where a level mount runs dry, the 20 MOA insert is a simple, rock-solid way to keep your elevation in play.
No. This is an insert that drops into the Leupold Mark 4 IMS integral base, which is sold separately. It cannot be used alone or with any other mounting system, so you'll need the IMS base to run it.
It tilts your scope's rear ring up by 20 minutes of angle, which shifts your zero lower in the scope's internal adjustment range. That leaves you more elevation to dial for long-range drop, so your turret doesn't run out of travel before you reach distant targets.
This particular part is the 20 MOA elevation insert for the IMS base. The IMS system offers separate ring inserts in 1-inch and 30mm, so you'll match your ring insert to your scope's tube diameter alongside this elevation piece.
Yes. It comes with the Leupold Full Lifetime Guarantee, the same coverage found across the Mark 4 lineup. Leupold field-tests these mounts for durability and strength, so it's built to hold up to hard use.
| UPC | 030317102937 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | LEU110293 |
| Color | Black |
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