A 4.5″ 9mm lightweight profile barrel made from 4150 chrome-moly steel with a 1-10” twist rate and 1/2×28 thread pitch. Orders over $99 qualify for fast and free shipping! Need your gear …

Whether it’s a 4.5-inch pistol barrel, a mid-length carbine barrel or a full 16-inch straight profile barrel, Right To Bear has the quality American-made barrel you need. Shop our selection of …

The Ballistic Advantage 9MM Modern Series 4.5″ Straight Barrel is designed for blowback-operated AR9 platforms, eliminating the need for a gas block or tube. This simple yet effective …

No indicator pin simple install just secure with barrel nut.

The Griffin MK2 9mm is a fully ambidextrous 9mm AR-15, and is the first full-ambi 9mm AR-15s with a forged 7075-T6 receiver set. It is a Colt magazine pattern lower capable of receiving …

This 4.5 inch Kaw Valley Precision 9MM Barrel is button rifled out of 4150 CMV Steel, QPQ Salt Bath Nitrided, with an 11-degree target crown for the best accuracy and durability possible for …

This complete AR-15/AR-9 pistol build kit is designed to provide an affordable yet high-quality build solution. Perfect for first-time builders or those looking for a budget-friendly option, this kit …

Complete 9mm upper receiver assembly ready to run out of the box with any 9mm AR-15 lower receiver. Featuring our 4.5" barrel and a 4" hand guard.

AR-9 9MM 4.5" PISTOL UPPER ASSEMBLY / BCG and CH / SLICK / NON LRBHO - This setup merges the versatility of the AR platform with the affordability and widespread availability of …

Upgrade your AR-15 with the DTT 'Penny Blaster' 4.5-inch 9mm Nitride Pistol Upper Build Kit, offering reliable performance in a compact design. Ideal for close-quarters, this durable nitride …