The StreamLight ProTac 2L is a medium-sized, tactical flashlight that generates a 350 lumen beam and uses two CR123 batteries. The 2L is 4.77″ long and could easily be carried in a pocket or holster. It uses the standard Streamlight programming with High/Strobe/Low and also offers the TEN Tap programming to switch it to High only or Low/High only. This flashlight is a good choice if you want a tactical light that is easy to carry and you have larger hands (tactical lights should be longer than the width of your palm).
Features include:

• Beam: 350 lumens at 6,300 candela with 159m beam
• Runtime: 3.25 hours from two CR123 batteries
• Construction: Machined from aircraft grade aluminum, mild strike bezel on head/tail, tight/smooth threads, O-ring for water sealing
• Size/Weight: 4.77″ long, 2.8 oz w/batteries, small enough to fit in my pants pocket, large enough to extend past the palm of my hand
• Batteries: Two CR123s
• Waterproof: IPX7 waterproof to 1 meter for 30 minutes
• Durability: Withstands 2-meter drop
• Price: About $45
• Features: High/strobe/low by default and Ten-Tap Programming for High only and low/high
• Beam Pattern: 43″ x 6″ at 3′ (Beam Scale)

It is a basic, tactical flashlight that is easy to carry. It uses two CR123 batteries, has high/strobe/low modes, and the body is machined from aircraft aluminum. The 2L is nearly the perfect size for a tactical flashlight. The length allows the flashlight to extend past the palm of my hand. The flashlight diameter is small enough to easily fit in one’s pocket.

Advantages

The 2L would be a good choice for an everyday carry (EDC) flashlight.

• High beam of 350 lumens with 3.25 hour battery life
• Low beam of 30 lumens with 35-hour battery life
• Aluminum construction with tactical bezels on the front and back
• Small size allows the flashlight to be easily concealed
• Large enough to extend across the palm of my hand

Disadvantages

• No low battery indicator: This light will work fine until the batteries get low and then it will stop working with very little warning. If you needed to light in a tactical situation and the batteries were low you may have a completely non-working light.
• The light does not tail-stand easily. While this is a disadvantage if you want to tail-stand the light it means that the button is easier to press use to less material on the back of the light.

These are minor disadvantages and should NOT dissuade you from purchasing this light.

Recommendation

My favorite Everyday Carry (EDC) is still the ProTac 1L-1AA but the 2L is a good choice due to its size and brightness. Also consider the ProTac 2L-X flashlight. The 2L-X is a bit larger, generates a 500-lumen beam, and can use either two CR-123s or a single 18650 rechargeable battery.