Strike Industries ARMAG 33rd Magazine 223/5.56 AR-15 Black Polymer

The Strike Industries ARMAG Standard delivers reliable high-capacity feeding for AR-15 platform rifles with its 33-round polymer construction. This magazine addresses the need for extended capacity without the bulk and weight penalties of traditional steel alternatives.

What Makes This Different

The ARMAG Standard utilizes Strike Industries' proprietary polymer blend that maintains structural integrity under sustained firing schedules while weighing 40% less than comparable steel magazines. The internal geometry features optimized feed angles that reduce bolt-over-base malfunctions common in extended capacity magazines. Anti-tilt followers and constant-tension springs maintain consistent cartridge presentation throughout the entire capacity range.

Key Features

• 33-round capacity for 223 Remington and 5.56x45mm NATO cartridges
• Lightweight polymer construction reduces loaded weight by 6.2 ounces vs steel
• Anti-tilt follower design prevents feeding malfunctions
• Textured grip panels provide secure handling during tactical reloads
• Compatible with AR-15, M16, and M4 pattern rifles
• Reinforced feed lips resist cracking under magazine insertion stress
• Witness holes allow visual ammunition count verification

Field testing demonstrates consistent feeding across various ammunition weights from 55-grain to 77-grain match loads. The magazine functions reliably in competition environments where rapid reloads are critical, while the extended capacity proves valuable for defensive applications requiring sustained fire capability. Temperature cycling from -20°F to 140°F shows no dimensional changes that affect function.

Technical Specs

• Capacity: 33 rounds
• Caliber: 223 Remington/5.56x45mm NATO
• Material: High-impact polymer construction
• Weight: 4.8 ounces empty
• Overall Length: 9.2 inches
• Compatibility: AR-15, M16, M4 platforms with STANAG magazine wells
• Color: Matte black finish
• Country of Origin: United States

The ARMAG Standard represents a practical solution for shooters requiring extended capacity without sacrificing reliability or adding excessive weight. Strike Industries backs this magazine with their standard warranty against manufacturing defects, making it a sound investment for serious rifle applications.