Panzer AR57 ULT 5.7x28mm Upper – $599.99

AmmoLand Editor Duncan Johnson

March 13, 2026

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Summary

The Panzer AR57 ULT Upper Assembly, which converts a standard AR-15 lower to a 5.7x28mm PDW-style platform, is currently discounted to $599.99 from its usual price of $899.99. This upper features a 12-inch lightweight barrel with an M-LOK rail, feeds from top-mounted 50-round FN P90-compatible magazines, and ejects spent brass downward through the AR magwell.

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Panzer AR57 ULT 5.7x28mm Upper – $599.99

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