The Kel-Tec KSG is a bullpup 12-gauge pump-action shotgun with dual magazine tubes that together hold 12 rounds of 2.75" shells (plus one in the chamber). The overall length is 26.1" with an 18.5" barrel — considerably shorter than a conventional pump of the same barrel length because the action sits behind the trigger in the bullpup layout. It weighs 6.9 lbs. and has a gray synthetic stock. 
 

Key Specifications 

• Brand: Kel-Tec 
• Model Name: KSG 
• Gauge: 12 GA 
• Chamber Length: 3" 
• Action Type: Pump Action 
• Capacity: 12+1 rounds (2.75" shells) 
• Barrel Length: 18.5" 
• Overall Length: 26.1" 
• Weight: 6.9 lbs 
• Sights: Optic Ready (Picatinny Rail) 
• Stock Material: Synthetic Gray 
   

Features 

 
The two magazine tubes run parallel under the barrel and are selected manually. A lever lets you switch between tubes, so you can load different loads in each tube and swap on the fly. The Picatinny rail on top has no iron sights; a red dot or other optic is required. 
 
The crossbolt safety is standard. Muzzle-down orientation when pumping helps avoid short-stroking, which is a mechanical characteristic of the KSG design. The compact length is the primary practical advantage over a conventional pump in the same gauge and barrel-length class. 
 
The KSG fits tight-space home defense use and high-round-count shooting scenarios where the extra capacity reduces reloads.

KSG owners and prospective buyers focus on two things: the compact length and the 12+1 capacity. The bullpup layout genuinely achieves both compared to a conventional pump, and that is the consistent draw.

Reliability is the main discussion point and the most nuanced one. Feeding issues with certain ammunition types come up often enough that most experienced KSG shooters recommend running a variety of loads through it before trusting it for defense use. Proper pump technique, especially avoiding short-strokes, is also frequently mentioned as something that takes practice with the bullpup layout.

Ergonomics divide opinion. The grip positioning, selector lever location, and controls work for some shooters and feel awkward for others. The ejection port position requires attention to hold orientation. Some owners work through these with practice; others find the ergonomics never fully click.

Aftermarket support is reasonable. Pricing is considered competitive for a dual-tube bullpup shotgun. The KSG has a clear use case; buyers who research the platform before purchasing tend to be satisfied with it.