This KCI USA AR-15 21-round magazine features a polycarbonate body with a patented stainless steel feed lip design, a 17-7 stainless steel spring, and an anti-tilt follower. It is compatible with .223 Remington and 5.56x45mm on AR-15, M16, and M4 platforms. The magazine weighs 4.2 oz and includes dual-sided round count indicators and a textured exterior.
The KCI USA 21-round polycarbonate magazine uses a polycarbonate body with a transparent opaque finish and a textured exterior surface. The patented stainless steel feed lip design and 17-7 stainless steel spring make up the steel internal components. The anti-tilt follower and dual-sided round count indicators are consistent across this and the 30-round variant in the KCI USA polycarbonate magazine lineup.
This magazine is compatible with .223 Remington and 5.56x45mm cartridges on AR-15, M16, and M4 platforms. At 4.2 oz, the polycarbonate construction keeps the overall weight consistent with the reduced-capacity profile. Both caliber and platform compatibility are consistent with standard AR-15 magazine specifications.
Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.
Product Type: Rifle Magazine
Brand: KCI USA
SKU: KCI-MZ066
Platform Compatibility: AR-15 / M16 / M4
Caliber Compatibility: .223 Remington / 5.56x45mm
Capacity: 21 Rounds
Body Material: Polycarbonate
Feed Lips: Stainless Steel (Patented Internal Design)
Spring Material: 17-7 Stainless Steel (Increased Power)
Follower: Anti-Tilt
Finish: Transparent Opaque
Round Count Indicator: Dual-Sided Markings
Weight: 4.2 oz
Construction: Reinforced Polymer Body with Steel Internals
Grip Texture: Textured Exterior for Improved Handling
Intended Use: Reduced Capacity Magazine for AR-15 Platform
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