Suppressor Upper Build Kits

What "Suppressor Ready" Means

A suppressor-ready upper has a threaded muzzle that accepts a suppressor mount or direct-thread can, and a handguard with enough inside room to clear it. Thread the suppressor on when it arrives, with no gunsmithing or barrel swap needed.

Choose Your Caliber

• .300 Blackout: The most popular suppressed AR caliber. It's very quiet with subsonic ammo and works well in short pistol-length uppers like the 8.5" Aegis.
• 9mm: Low recoil and cheap to shoot, and very quiet with a 9mm can. The 16" Sindar upper keeps it rifle-length.
• .45 ACP (AR-45): Subsonic with standard ammo, so it's quiet with no special loads needed. A good fit for compact pistol uppers like the 7.5" Aegis.

Upper Build Kit vs. Complete Upper

An upper build kit ships with the parts for you to assemble. A complete upper comes assembled and ready to pin onto your lower. Check each listing's "What's included" section for the receiver, bolt carrier group and charging handle.

Match Your Suppressor

Check the barrel's thread pitch and pick a can rated for the caliber. Most 9mm and .45 ACP barrels use 1/2x28 or 0.578x28, and .300 Blackout typically uses 5/8x24. Confirm on each product page.

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