Kel-Tec R50BLK R50 5.7x28mm 50+1 16.10" Threaded Barrel, Black Receiver & Polymer Grip, Side-Folding Stock, Adjustable Sights, QD Sling Mount $874.99
Diamondback DB1614L001 DBX57 CF 5.7x28mm 8" 20+1 Black Hard Coat Anodized Stainless Steel Black Magpul MOE K Grip $963.26
Diamondback DB1614L071 DBX57 CF 5.7x28mm 8" 20+1 Midnight Bronze Anodized Rec with Picatinny End Cap Stainless Steel Barrel Black Magpul MOE K Grip $1,018.39
CMMG 54ABCC7MB Banshee MK4 5.7x28mm 30+1 8" Black Nitride Threaded Barrel, M-LOK Handguards, Midnight Bronze Cerakote Aluminum Picatinny Rail Receiver, Ambidextrous $1,499.26