The Trailblazer Lifecard is a single-shot .22 LR pistol built around one idea: get as small as possible without becoming useless. Closed, it measures 3.375 inches long, 2.125 inches tall, and 0.5 inches thick -- thin enough to slip into a shirt pocket. A built-in storage compartment holds three extra rounds inside the grip, so you're not completely limited to one shot. 
 

Key Specifications 

• Manufacturer: Trailblazer Firearms 
• Model: Lifecard 
• Caliber: .22 LR 
• Barrel Length: 2.5 inches 
• Overall Length (Closed): 3.375 inches 
• Height (Closed): 2.125 inches 
• Thickness: 0.5 inches 
• Finish: Sniper Gray Polymer 
• Grips: Polymer 
• Capacity: Single shot; storage compartment holds 3 additional rounds 
   

Features 

The Gray Polymer frame keeps weight down while the single-action mechanism stays simple -- load, cock, fire. There are no complex controls to fumble with. The storage compartment is genuinely useful for a backup round or two without adding bulk. 
 
The main trade-off is obvious: one round in the chamber is what you get until you manually reload. That limits its role. It works as a deep-cover backup, a trail gun where weight is the main concern, or a first firearm for someone who wants low complexity and low recoil. The .22 LR caliber means recoil is negligible and ammunition is cheap, which matters for practice.

The Lifecard draws predictable reactions from the firearm community -- people either find the form factor genuinely clever or immediately question the single-shot .22 LR for any serious role.

Portability gets the most consistent praise. The credit-card footprint and half-inch thickness are hard to argue with for deep concealment, and the folding mechanism is simple enough that it rarely causes complaints on its own terms.

The caliber debate is ongoing. Some accept .22 LR as adequate for a backup piece or a last-resort tool; others won't consider anything less than a centerfire cartridge for self-defense. Neither side is wrong exactly -- it depends on what role you're assigning to the gun.

Reliability concerns do come up, mainly around feeding and ejection hiccups in early use or after periods of storage without cleaning. The general advice is to run a box or two through it before trusting it.

Price discussions are mixed. Some find it reasonable for what it is; others think the same money buys a more capable pocket pistol. The Lifecard's niche is the people for whom size is the deciding factor above everything else -- hikers, campers, or anyone who wants something that disappears in a pocket and weighs almost nothing.