In addition to a new name – the Stimulus 3551 – the updated 3550 Pardue model features improved reliability and a larger push button. It maintains the stylish spear point blade shape and compact 6061-T6 aluminum handle, equipped with safety and reversible right hand carry pocket clip. The small size of the Stimulus gives it an advantage in everyday carry comfort for military and law enforcement officers.
The Stimulus 3551BK has a black finished blade with a plain cutting edge.
I have nothing bad to say about the 3551 Stimulus. It's small, light and handy. Very easy carrying, you hardly know it's there. I like the shape and feel of the aluminum handle. To me it feels better in hand than the thin plastic handle on the manual 530 Pardue. The dagger style blade shape might seem a little threatening to some people but the knife is small enough to keep a low profile if the user wishes. The 154CM steel is excellent, easy to keep razor sharp. Functionally, the 3551 opens every time I've pushed the button. The deployment button doesn't feel mushy at all on my knife and I must say I like the safety. I wouldn't carry a side opening automatic if it doesn't have a safety. I own a few autos but I'm no expert. Of the autos I own, the best have been made by Benchmade, Hogue and Microtech. As a rule, all of these companies make outstanding knives that are worth every penny of the price.
I love the chalky finish that benchmade puts on their tactical knives. It gives grip, and the wear over time looks really great. The stimulus' blade has a perfect sharpening choil, and I love the 154cm blade steel. The blade shape itself is beautifully executed. The edge was ground very well too. Blade centering is perfect. Thank you, BHQ!
I have had the manual version of this since I think 1996. It has been a wonderful knife this entire time. So I finally decided I would buy an auto version of it since it has been so nice. It came and just like the non-auto version it is built like a tank. It does have metal rough grips which I really like (the non-auto has poly grips which have been fine too) but the metal adds a little bit of heft to it, the button and lock up are very solid, and I really like the slider/safety on the knife. I would buy this again if I needed to but based on my last Benchmade/pardue I won't have to (unless I lose it)
I have all kinds of Knives, Medford, Crusader , Microtech,benchmade , Sog, Zero tolerance, etc This knife works great for my everyday carry. Nice crisp spring open. Holds a good edge even after use and abuse. I don’t like the safety on the back so I just put a drop of epoxy to keep it unlocked and it’s worked like a champ.
It’s an alright automatic. If you want an automatic buy another knife. I can’t reccommend it that much. The button is mushy and doesn’t seem to open the knife well. If you want a benchmade automatic get another one.