Midwest Industries® MK2 Series Non-QD Fixed Optic Mount – Fits Aimpoint® ACRO Footprint – Lower 1/3 Co-Witness Height – Hardcoat Anodized Black Finish – MI-MK2-ACRO1-3
The Midwest Industries® MK2 Series Fixed Lower 1/3 Co-Witness Aimpoint® ACRO Optic Mount (MI-MK2-ACRO1-3) represents a premier mechanical benchmark in structural rifle optics integration, masterfully engineered in the USA to deliver absolute structural rigidity and optimized sight tracking profiles for enclosed-emitter red dot sights. Purpose-built to interface flawlessly with the revolutionary Aimpoint ACRO footprint on modern AR-15 and tactical rifle platforms, this fixed mount platform is engineered for hard-use firearms where compact stealth, rock-solid security, and cross-compatibility with backup iron sights override the need for quick-detach manipulation. While generic or multi-piece aluminum reflex mounts are notorious for shifting zero under hard impact loops—and frequently rely on weak, low-grade cross-bolts that snap under severe field strain—the Midwest Industries MK2 unibody architecture fundamentally shifts survival limits. This premium component (812102035992) acts as an unyielding tactical foundation, functioning as an exceptional primary asset for duty-vetted patrol carbines, home-defense rifles, and high-tempo tactical staging setups.
The structural foundation of this high-efficiency mounting engine is CNC precision-machined from a solid block of premium certified 6061-T6 aircraft-grade aluminum billet. Treated with an advanced, deep-penetrating **Type III Mil-Spec Hardcoat Anodization**, the mount easily shrugs off relentless carbon gas scouring, abrasive field handling, and harsh environmental humidity. Moving past traditional low-tier mounting tabs that splay out under torque stress, the MK2 platform integrates an ultra-tough **4140 heat-treated steel alloy cross-bolt clamp system**. This heavy-duty clamping core generates monumental lateral clamping force across any standard Mil-Spec 1913 Picatinny rail, guaranteeing repeatable return-to-zero tracking bounds that remain entirely immune to the violent reciprocating slap of high-velocity rifle recoil pulses or unexpected drop impacts.
The true operational highlight of this American-made milestone lies in its optimized Lower 1/3 Co-Witness height profile and minimized structural mass. Designed specifically to position the red dot's sightline at a standard **1.60-inch height over the rail**, this configuration allows operators to maintain an instantaneous, natural cheek weld on standard AR-15 comb stocks. This elevation places your backup iron sights within the lower third of the optic window, providing an unobstructed field of view for your primary red dot while keeping your physical irons immediately accessible for emergency backup transitions. Precision-milled with crisp aesthetic styling, the mount ensures an immaculate visual profile that flows seamlessly with your optic's chassis. Weighing a featherlight 2.50 ounces, this rugged mount delivers absolute mechanical authority, shipping complete with a custom **Midwest Industries Optic Installation Tool** to achieve flawless torque values right out of the box.
Includes: (1) Midwest Industries MK2 Fixed Lower 1/3 Co-Witness ACRO Optic Mount (6061-T6 Aluminum Body, Matte Black Anodized), (1) 4140 Heat-Treated Steel Clamping Block Assembly, Integrated Torx Hardware Fasteners, and (1) Proprietary Midwest Industries Optic Installation & Adjustment Tool.
*Torx Hardware Fastener & Picatinny Rail Torque Guidance: The MI-MK2-ACRO1-3 mount requires a clean, debris-free interface with your 1913 Picatinny rail. To ensure absolute return-to-zero performance and prevent structural thread stripping, tighten the main 4140 steel cross-bolt fasteners to a maximum torque value of 35 in-lbs using the enclosed tactical tool. Never use liquid thread-locking compounds on the internal ACRO optic wedge clamp screw; instead, rely on dry factory friction alignments to lock your enclosed red dot securely onto the mount's integral indexing lug.
Key Features
- Optimized Aimpoint ACRO Fitment: Engineered to natively index with the Aimpoint ACRO P-1, ACRO P-2, and Steiner MPS footprints without requiring adaptive plates.
- Lower 1/3 Co-Witness Geometry: Establishes a standard 1.60" optical centerline over the rail, keeping backup iron sights tucked cleanly into the lower window frame.
- 4140 Heat-Treated Steel Clamps: Industrial-grade steel clamping shoe locks down relentlessly onto Picatinny rails to eliminate lateral or forward mount shifting.
- 6061-T6 Aircraft Aluminum Base: Monolithic CNC precision-machined aluminum block core balances high-velocity structural mass with duty-grade impact armor.
- Type III Hardcoat Anodized Shield: Deep matte black chemical finish shields the underlying alloy against saltwater corrosion, mud abrasion, and harsh solvent damage.
- Proudly Sourced & Built in the USA: Manufactured entirely in America by veteran technicians, backed by Midwest Industries' comprehensive limited lifetime warranty.
Product Specifications
- Brand: Midwest Industries® (Waukesha, Wisconsin, USA)
- Product Line: MK2 Non-QD Performance Scope & Optic Mounts Series
- Model Designation: MK2 Acro Aimpoint Mount - 1/3 Cowitness Black
- SKU / MPN: MI-MK2-ACRO1-3 (Alternative Part Identifiers: MIMK2ACRO1/3 / MI-MK2-ACRO1/3)
- Mounting Interface Class: Mil-Spec 1913 Picatinny Rail System Compliant
- Optic Footprint Native Interface: Aimpoint® ACRO Series (P-1 / P-2) & Steiner® MPS Footprints
- Mount Height Profile Configuration: Lower 1/3 Co-Witness Form Factor (1.60" Sightline Centerline Height)
- Chassis Material Base: Monolithic CNC Precision-Machined 6061-T6 Structural Aluminum Billet
- Clamping Base Material: 4140 Computer Heat-Treated Heavy-Duty Steel Alloy
- Surface Finish Class: Matte Non-Reflective Type III Mil-Spec Hardcoat Anodization
- Chassis Fastener Hardware: Integrated Heavy-Duty Torx Drive Cross-Bolts
- Recommended Mounting Torque Metric: Maximum 35 in-lbs (Inches-Pounds) Along Rail Clamp
- Product Net Component Weight: ~2.50 oz (70.8 g) - Featherlight Low-Mass Mount Core
- Total Boxing Shipping Mass: ~0.35 lbs (Enclosed Inside Protective Padded Retail Distribution Packaging)
- UPC Barcode: 812102035992
