$49.89. That is the entire price of a slipjoint with a pattern-welded Damascus blade, and it is the number that makes Tenable's Riflestock worth a second look before anything else about it matters.
The pattern is a gunstock, one of the older American slipjoint families, named for a handle that curves the way a rifle buttstock does. Traditional versions run three and a half to four inches closed. This one measures 5.48 inches overall with a 2.34-inch blade, so it is a scaled-down reading of the pattern rather than a reproduction.

Nick Swan designed it. He spent a career in law enforcement before moving into knives, and his stated position is that a knife worth owning is worth carrying, which is a polite way of saying he does not build for display cases. The Riflestock reflects that: no flipper, no bearings, no lock, nothing that needs explaining.
Damascus is the part that deserves scrutiny at this price. Water ripple pattern-welded steel etches differently from batch to batch, so the blade in a photograph will not match the blade in the box, and the hardness figure of 58 to 60 HRC refers to the core rather than the visible pattern layers. Flat ground on 3 mm stock, modified drop point, and a finish that will show fingerprints and light surface rust if it sits damp in a pocket overnight. Oil it. Keep it away from citrus.
The handle is anodized aluminum in light blue, and the whole knife weighs 1.66 ounces. That is light enough to forget, which cuts both ways: aluminum is slick when wet, and anodizing wears to bare silver along the edges within a year of daily carry. There is no pocket clip, so the Riflestock rides loose in a pocket or in the small fifth pocket of a pair of jeans, where 5.48 inches of closed length fits with a little room to spare.
As a slip joint it has no lock. Pressure applied to the spine closes the blade on the fingers holding it, and that is not a flaw but the definition of the pattern. Opening takes two hands and a thumbnail. Anyone expecting a fidget-friendly one-hand opener is looking at the wrong knife.
Compare it with the usual budget Damascus offerings and the difference is mostly weight and finish. Most of them are brass-lined traditionals with wood covers, and they land near four ounces. The Riflestock gives up that weight and gains a handle that shrugs off sweat. It also gives up the warmth of wood, which is a real loss for anyone who carries a pocketknife partly because they like the object.
For carry legality the combination matters more than the blade alone. A 2.34-inch non-locking folder is exactly the shape UK carry law allows without a specific reason, and several European countries draw similar lines. American state law varies enough that the only responsible advice is to check the local statute, since a few jurisdictions restrict slip joints by length as well.
Where it fits is narrow and clear. It is a knife for opening mail, cutting tape, trimming a thread, slicing an apple at a desk. It is a reasonable gift for someone who wants a good-looking folder and would never sharpen one. It is the wrong choice for camp chores, for gloves, or for anyone who opens boxes at speed all day.
Tenable has not said whether Riflestock becomes a series or stays a single model. A second colorway, or a version with a clip, would answer that faster than any review can. Until then the question is whether a $49 Damascus slipjoint is a novelty or the start of a line.