Converts your AR lower to fire FN's 5.7X28mm round
Takes 50rd PS90 Mags
Complete assembly with 16.04" barrel
Upper comes with flash suppressor, bolt and "carbine" buffer
Please note that this item is an upper receiver assembly only
No magazine or lower receiver assembly is included
For a limited time we are offering a FREE 50rd AR57 magazine when you purchase this upper
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