The LKCI Eternal BP-12 is a gas-operated semi-automatic shotgun chambered in 12 GA. The 18-inch barrel, detachable magazine, and polymer stock come in at 6.5 lbs and 28.7 inches overall. 
 

Key Specifications 

• UPC: 195536000065 
• Gauge: 12 GA 
• Action Type: Semi-Automatic (Gas Operated) 
• Capacity: 5 Rounds (Also compatible with a 10-Round magazine) 
• Barrel Length: 18 inches 
• Item Length: 28.7 inches 
• Weight: 6.5 lbs 
• Finish: Black (Matte) 
• Stock Material: Polymer 
• Magazine Type: Detachable 
   

Detailed Features 

 
The gas-operated action smooths out the recoil impulse compared to inertia-driven designs and allows the BP-12 to cycle a wider range of loads reliably. The 18-inch barrel keeps overall length compact at 28.7 inches, which is practical for close-quarters or vehicle use. 
 
The detachable box magazine is the defining characteristic here — the included 5-round magazine works for field use, and the 10-round extended option provides more capacity for range or home defense applications. Magazine-fed semi-auto shotguns allow faster reloads than tube-fed designs when you have loaded magazines staged. 
 
At 6.5 lbs it's one of the lighter configurations in the tactical shotgun category.

The BP-12 draws interest as a magazine-fed gas-operated 12 GA at a price point below established names in the category. Users who run it for home defense or range work generally find the semi-auto action reliable with standard loads, and the detachable magazine system gets positive marks for quick reloads.

Build quality discussions are mixed — some owners find the construction solid, others raise questions about long-term durability of specific components compared to more established brands. Value for money is the most positive recurring theme; the BP-12 delivers the magazine-fed semi-auto shotgun format at a competitive price. Customer service and warranty support from LKCI is a variable that comes up in longer ownership discussions.