The FN SCAR 17S is a semi-automatic rifle chambered in 7.62x51mm NATO, running a short-stroke gas piston operating system. The 16.25-inch chrome-lined cold hammer-forged barrel, telescoping side-folding stock, and 20+1 capacity make it one of the more capable 7.62 semi-auto platforms commercially available. 
 

Key Specifications 

• Model: SCAR 17S 
• Caliber: 7.62x51mm NATO 
• Action: Semi-Auto 
• Capacity: 20+1 rounds 
• Barrel Length: 16.25 inches 
• Overall Length: Adjustable between 36" to 38.5" 
• Weight: 8 lbs 
• Safety: Manual safety feature included 
• Stock Description: Telescoping side-folding stock with adjustable cheek rest 
• Receiver Material: Durable aluminum construction 
• Muzzle Feature: Muzzle brake 
• Sights: Adjustable folding front & rear sights 
• Barrel Description: Chrome-lined cold hammered forged barrel 
• Twist Rate: 1:12" 
   

Detailed Features 

 
The short-stroke gas piston system vents fouling away from the action and cycles reliably across a wide range of loads, including suppressed fire. The chrome-lined cold hammer-forged barrel extends service life and maintains accuracy through heavy use. The muzzle brake is worth noting — with a 20+1 magazine of 7.62, keeping muzzle rise in check matters for practical accuracy during faster shooting. 
 
The telescoping side-folding stock with adjustable cheek rest works for optics at different heights and folds entirely flat for transport. Adjustable folding sights co-witness with most low-mount optics and fold clear when not needed.

The SCAR 17S Multi-Cam Precision Rifle gets consistent praise for construction quality, the short-stroke gas piston's reliability, and accuracy at distance. The ergonomics — adjustable stock, modular grip — get positive marks from shooters who have used the platform across different roles.

The recurring criticisms are price and weight. At 8 lbs empty and with a 7.62 platform price tag, some buyers argue there are lighter and cheaper alternatives. Recoil from the 7.62 NATO round is manageable for experienced shooters but notable for those stepping up from 5.56. Aftermarket accessory availability, while good, is narrower than AR-10-pattern rifles, which matters for shooters who want proprietary SCAR-specific parts.