Franklin Armory is now selling what may be the first gas-operated, semi-automatic rifle chambered for the .17 WSM (Winchester Super Magnum) cartridge.  The F17-L rifle uses a Stoner-like system with direct gas impingement and a rotating locking bolt.  Although it is a rimfire cartridge, the .17 WSM runs at centerfire rifle velocities.  Factory ammo is rated up to 3,000 fps with a 20 grain bullet.

Specifications

• caliber:  .17 WSM
• magazine capacity:  10 rounds (20 round mag in development)
• barrel:  20″ bull barrel, 1:9″ twist, 4140 chromoly steel
• upper and lower:  7075-T6 aluminum with anodized Desert Smoke finish
• buttstock:  Magpul MOE
• additional:  push button QD sling attachments, oversized trigger guard, Ergo AmbiSure grip

The majority of standard AR-15 parts (excluding the bolt carrier group, buffer and magazine) should fit this rifle.

Thanks to Cymond for the tip.