Blade steel: 420HC
Blade length: 2.75" (7.50 cm)
Handle: glass-reinforced nylon base with over-mold of Dynaflex rubber
Overall length open: 6.75" (16.50 cm)
Length closed: 4" (10.50 cm)
Lock mechanism: locking liner
Weight: 2.0 oz (58 g)
Warranty: Limited lifetime
Backpacker Magazine
Gear Lab Winner
Selected as the sharpest mini-knife for a survival kit. Criteria were: locking blade, cost less than $50, and weighed less than 2 oz. Tests included usage on blade-dulling materials such as wood, aluminum, leather, rope, plastic and vegetables.
After testing, the Buck NXT I-TS "carved the thinnest, smoothest wedge of tomato" and earned praised for "a grippy, ergonomic rubber handle, which ensured a secure grip even with sweaty hands."
Bacpacker Magazine: October 2006, pg 100
Buck's modern folders usually carry a model number. However, early (Pre-1986) Buck knives could have nothing, Buck, Buck USA or Buck USA date code on their tangs (1986 added date codes). I've never handled a 281 and I don't have too many liner locks. How do you like it?