MidwayUSA has just about every AR-15 part and AR-15 accessory for your black rifle. Use our how-to guide to Build the Ultimate AR-15 Varmint Rifle and shop our huge selection of brand-name AR-15 and M4 parts by DPMS, Bushmaster, Trijicon, AR-Stoner and more. MidwayUSA has got you covered for all your AR-15 needs.

AR-15 Ammunition

• 223 (5.56 NATO)
• 308 (7.62 NATO)
• 6.5 Grendel
• 6.8 Remington SPC
• 458 SOCOM
• 50 Beowulf

AR-15 Gun Parts

• Upper Assemblies & Barrel
• Buttstock, Handguards, & Pistol Grips
• Lower Receivers
• Triggers
• Safety

AR-15 Magazines

• AR-Stoner
• Bushmaster
• C-Products
• HK

AR-15 Optics & Accessories

• Aimpoint
• Trijicon
• American Defense
• Eotech

How-To Guides

• Build the Ultimate AR-15 Varmint Rifle