The GSG-16 by American Tactical is a .22 LR semi-automatic rifle built on an MP5-style platform. Black polymer construction, 16.25-inch barrel, and a collapsible stock with a built-in storage compartment. At 5.84 lbs it's light, and the overall length runs 28.50" to 34.25" depending on stock position. 
 

Key Specifications 

• Brand: GSG 
• Model: GSG-16 
• Caliber: .22 LR 
• Action: Semi-Auto 
• Barrel Length: 16.25 inches 
• Overall Length: 28.50" - 34.25" 
• Capacity: 10+1 rounds 
• Weight: 5.84 lbs 
• Finish: Black 
• Safety: Ambidextrous 
• Sights: Adjustable Front & Rear 
• Stock Type: Collapsible with Storage Compartment 
   

Features 

 
The adjustable stock covers a range of lengths-of-pull and includes a storage compartment, practical for carrying cleaning gear or spare parts. M-Lok handguards let you mount accessories without additional adapters. Both front and rear sights are adjustable, which helps dial in the zero for different ammo. The ambidextrous safety works for left- or right-handed operation without swapping parts. 
 

Usage 

 
.22 LR keeps ammo costs low, making this a good range rifle for volume shooting or skills practice. The MP5 profile appeals to owners who want a familiar manual of arms. Recoil is negligible, so it's comfortable for new shooters learning trigger control and sight alignment. It's not a defensive tool. It's better understood as a trainer or recreational plinker.

The GSG-16 Gen 2 draws consistent feedback around a handful of themes.

The MP5 aesthetic is a genuine selling point. Owners like the look and the form factor, and many bought it specifically because of the platform's visual identity.

As a .22 LR plinker it earns good marks. Low recoil and cheap ammunition make range sessions easy to extend, and most owners treat it as a fun gun rather than a serious tool.

Customization gets discussed a lot. The M-Lok handguards and standard accessory rail options mean optics, lights, and grips all mount without much fuss, and owners swap configurations regularly.

The collapsible stock is well-received for fitting different shooters and positions.

Reliability is the main sticking point. Some owners report feeding or cycling issues with particular ammunition brands. It's not universal, but it comes up enough to be worth noting. Testing a few ammo types before settling on one is a common recommendation.

Build quality gets mixed reactions. It's a budget-tier rifle and some owners feel the construction reflects that, particularly compared to more expensive platforms.

Trigger feel divides opinion. For a rimfire at this price it's adequate to many; others find it vague and wish for a cleaner break.

Overall it's positioned as an entry-level semi-auto rifle, commonly recommended for those getting into the category without spending heavily.