MDT AICS Magazine – 5-Round Extended, .300 Win Mag, Long Action (3.715"), Black Steel (102143BLK)

Model/SKU: 102143BLK • UPC: 723905908713
Caliber: .300 Winchester Magnum (LA) • Capacity: 5 Rounds (Extended) • Pattern: AICS Long Action • Overall Length Standard: 3.715" (LA short-CIP spec) • Material/Finish: Steel, black, corrosion-resistant • Color: Black

Build a more reliable long-action magnum system with the MDT 5-Round Extended AICS Magazine for .300 Win Mag. Precision-formed from durable steel and finished in a low-glare, corrosion-resistant black coating, this AICS-pattern mag is tuned for 3.715" long-action inlets and bottom metals. The extended body provides extra stack geometry and controlled feed angle—key for consistent presentation of long, heavy .30-cal magnum bullets in field and match environments. Whether you’re stretching dope to a mile, dialing turrets on an elk ridge, or running a competition-stage mag change with gloves on, this MDT magazine delivers the feed reliability, durability, and repeatable lock-in you need.

Why Choose This MDT .300 WM Long-Action Magazine

• True AICS compatibility (3.715"): Fits most AICS-pattern long-action chassis and bottom metals cut to 3.715" length—common on MDT chassis (ACC, HNT26, ESS, XRS, Oryx LA variants) and many other quality stocks/inlets.

• Optimized for magnums: Reinforced steel body, tuned feed lips, and a high-tension spring support smooth, nose-up cartridge presentation with typical .300 WM bullet profiles (bonded, mono, OTM).

• Extended 5-round capacity: The extended design improves stack alignment and grab area while maintaining a compact footprint for prone, pack, and bipod work.

• Rugged, weather-ready build: Black, corrosion-resistant finish shrugs off moisture, blood, mud, and dust.

• Service-friendly: Removable floorplate simplifies cleaning after wet, dusty, or high-round-count trips.

Fitment Note: This magazine is designed for 3.715" long-action AICS inlets. It does not fit 3.850" extended-CIP cut receivers without appropriate spacers/adapters. Always verify your inlet spec before purchase.

Key Features at a Glance

• Caliber: .300 Win Mag (Long Action)

• Capacity: 5 rounds (extended body)

• Pattern: AICS long action, 3.715" standard

• Construction: Steel body, anti-tilt follower, high-tension spring

• Finish: Black, low-glare, corrosion-resistant

• Floorplate: Removable for maintenance

• Compatibility: AICS-pattern LA chassis/bottom metals cut to 3.715"

• Model / UPC: 102143BLK / 723905908713

Performance Advantages

• Reliable feeding with heavy bullets: Stable column control and feed-lip geometry reduce nose-dive and stack chatter—especially important with long-ogive projectiles and belted cases.

• Positive lock & drop-free design: Consistent mag catch engagement supports faster reloads on the clock or in the cold.

• Hunting to ELR: From backcountry hunts to steel at distance, the tough steel shell and consistent presentation inspire confidence.

Recommended Use Cases

• Long-range hunting: Elk, moose, and mountain hunts where reliability and weather resistance matter.

• Precision/ELR practice: Clean, repeatable feeds for dope validation and heavy-bullet load testing.

• LE/Military & training: Durable construction stands up to vehicle racks, range dust, and high-volume use.

Care & Maintenance (Quick Guide)

1. Unload and depress the floorplate retainer; slide off the floorplate.

2. Clean body, follower, and spring with a dry brush/patch; remove grit and moisture.

3. Lightly oil the spring to prevent corrosion; avoid heavy lube on follower/walls.

4. Reassemble and function-check for smooth hand-cycling and positive lock.

Specifications (Summary)

• Brand: MDT Sporting Goods Inc.

• Product: AICS Magazine, 5-Round Extended

• Caliber: .300 Win Mag (Long Action)

• Capacity: 5 rounds

• Pattern/Length: AICS LA, 3.715"

• Material: Steel

• Finish/Color: Black, corrosion-resistant

• Follower/Spring: Anti-tilt follower, high-tension spring

• Floorplate: Removable

• Model/SKU: 102143BLK

• UPC: 723905908713

SEO Highlights (What Shoppers Search)

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Meta Title (SEO)

MDT AICS Magazine – 5-Round Extended, .300 Win Mag, Long Action 3.715", Steel, Black | 102143BLK | 723905908713

Meta Description (SEO)

Run your .300 Win Mag with confidence. MDT’s 5-Round Extended AICS Magazine (3.715" LA) features a steel body, anti-tilt follower, high-tension spring, removable floorplate, and corrosion-resistant black finish. Model 102143BLK, UPC 723905908713.

Structured Data (JSON-LD)

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**Feed smoother, reload faster, and trust your mag in any weather—**the MDT 5-Round Extended AICS Magazine (102143BLK) is the long-action .300 Win Mag upgrade that delivers when it counts. The End