The Trailblazer Firearms LifeCard is a single-shot .22 LR pistol that folds flat to credit-card dimensions. It is about as minimal as a functional firearm gets: 3.375 inches long overall, 7 ounces, single-action, and built around a polymer frame with a black finish. 
 

Key Specifications 

• Model: LifeCard 
• Type: Single Shot Pistol 
• Caliber: .22 LR 
• Barrel Length: 2.5 inches 
• Overall Length: 3.375 inches 
• Capacity: 1 round (with storage space for 3 additional rounds) 
• Weight: 7 ounces (shipping weight: 0.4 lbs) 
• Action Type: Single Action 
• Frame Material: Polymer Frame with Black Finish 
• Trigger Pull Average: 3 lbs. 
• Safety Features: Will Not Fire When Closed 
• Thread Pattern: 1/2x28 (includes threaded barrel) 
   

Features 

The folding mechanism is the central design element. When closed the gun is inert by design and cannot fire. Open it, chamber a round, and it functions as a conventional single-action pistol with a 3-lb. average trigger pull. The frame has a small storage compartment that holds 3 spare rounds, so you can carry 4 rounds total. The threaded barrel (1/2x28) accepts standard suppressors and muzzle devices. Operation is ambidextrous. 
 
At 2.5 inches of barrel length and .22 LR, terminal performance is limited. The LifeCard is best understood as a deep-cover backup or a lightweight trail gun rather than a primary defensive firearm.

The LifeCard consistently draws comments on a handful of the same themes across firearm forums.

Portability is the most praised attribute. The folded profile lets it disappear into a pocket or pack where nothing else would fit, and that makes it attractive as a backup or lightweight trail companion. The folding mechanism itself gets attention for being genuinely clever rather than just a novelty.

The .22 LR caliber is a dividing line in discussions. Supporters point to low recoil, cheap ammo, and its adequacy for plinking or training. Critics argue it falls short for defensive use against larger threats, and that argument is hard to dismiss given the 2.5-inch barrel. Accuracy at distance is limited for the same reason.

Build quality opinions split between users who find it solid for its size and those who have concerns about long-term wear. Reliability reports are mixed; some users run it without issues while others have noted cycling problems.

The threaded barrel is well-received by buyers interested in suppressor use. Price discussions vary by individual expectations, but most see it as a niche tool priced accordingly rather than a general-purpose handgun.