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Flattop-Mounted Bases With Interchangeable Modular Ring/Riser Options - Base, MOA Ringinsert and ring sold seperately

Designed for the precision AR-15 shooter, Leupold’s IMS optic mounts clamp directly to a MIL-STD 1913 Picatinny flattop rail to raise the scope and push it forward, eliminating the need for separate risers or specialized short eye relief optics. Slides into place and secures with steel crossbolts that hold tight. Aluminum, hardcoat anodized finish, matte black.

The versatile Mark 4 Integral Mounting System gives you maximum adaptability with modular components, each sold separately. The Mark 4 Base clamps securely to the rifle’s flattop rail with a pair of hex head crossbolts and accepts the 1" or 30mm scope ring insert. The ring insert unit contains both scope rings, and its position can be adjusted on the base to accommodate different eye relief requirements. The 20 MOA riser can be used instead to provide a 20 MOA picatinny rail mount.  When used with picatinny rings, it provided additional elevation for addressing long range targets without maxing out your scope's elevation. (Not compatible with Mark 4 ring inserts.)


AR-15, Issue:10, Page:088
Big Book Catalog, Issue:68, Page:096
Law Enforcement / Police Store, Issue:13, Page:033
Mini-Catalogs, Issue:04, Page:015
New Product Supplement, Issue:641, Page:004
Sinclair, Issue:5A, Page:202

SPECS: Aluminum, hardcoat anodized, matte black. Steel crossbolts. 5¾" (14.6cm) long.

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4 Item(s)
MARK 4 INTEGRAL BASE MATTE
526-000-161WB
Mark 4 Integral Mounting System Base Only/ Matte
526000161Mark 4 Integral Mounting System Base Only/ Matte

Mfr Part: 110292

$77.99

In Stock

Style: Picatinny-Style Bases

MARK 4 20-MOA INTEGRAL RAIL INSERT
526-000-162WB
Mark 4 Integral Mounting System 20-MOA Insert Matte
526000162Mark 4 Integral Mounting System 20-MOA Insert Matte

Mfr Part: 110293

$50.99

In Stock

Style: Picatinny-Style Bases

MARK 4 1   INTEGRAL RINGS MATTE
526-000-163WB
Mark 4 Integral Mounting System 1 Ring Insert Matte
526000163Mark 4 Integral Mounting System 1 Ring Insert Matte

Mfr Part: 110294

$100.99

In Stock

Style: Picatinny-Style Bases

MARK 4 30MM INTEGRAL RINGS MATTE
526-000-164WB
Mark 4 Integral Mounting System 30mm Ring Insert Matte
526000164Mark 4 Integral Mounting System 30mm Ring Insert Matte

Mfr Part: 110295

$100.99

In Stock

Style: Picatinny-Style Bases

LEUPOLD MARK 4 INTEGRAL MOUNTING SYSTEM