The Kaw Valley Precision Thread Adapter, 13.5×1 LH to 5/8×24 (Kaw Valley Precision part no. KVPADPT1314) converts a barrel cut with the left-hand 13.5×1 thread pitch to accept larger 5/8×24-threaded muzzle devices and suppressor mounts, a common combination on AK-pattern rifles chambered for larger-bore cartridges. Left-hand threaded barrels otherwise limit shooters to a narrower selection of muzzle devices, so this adapter opens up the far more widely supported 5/8×24 accessory and suppressor mount market. Kaw Valley Precision machines the adapter to hold tight tolerances so the mounted device sits square and concentric to the bore. It’s a practical way to add modern muzzle device or suppressor compatibility to a left-hand threaded host barrel.

Key Specifications

• Converts 13.5×1 left-hand threading to accept 5/8×24-threaded muzzle devices and mounts.
• Machined to hold tight tolerances for a concentric, square mount to the bore.
• Installs by hand-threading onto the barrel’s existing muzzle threads.
• Sold as a standalone adapter, not bundled with a muzzle device.
• Machined from durable metal for repeated mounting and removal.

Frequently Asked Questions

Can I mount a suppressor using this adapter? If your suppressor’s mount is threaded 5/8×24, this adapter lets you attach it to a 13.5×1 left-hand threaded barrel; always confirm bore diameter compatibility for your caliber.

Why do some AK-pattern rifles use left-hand threading? Left-hand threading is used on certain platforms to prevent a muzzle device from loosening under bolt rotation or recoil.

Buy the Kaw Valley Precision Thread Adapter, 13.5×1 LH to 5/8×24

Order the Kaw Valley Precision thread adapter from our other gun accessories and parts selection, shipped fast and insured from our Lubbock, Texas gun shop.