Pro-Tech TR-5 Lerch Spring Assisted Knife Black (3.25" Stonewash) SA.1

Item #BHQ-34430
MSRP: $300.00
Our Price: $260.00
Out of Stock
Try Pro-Tech (Assisted) instead
Login to add items to your Wishlist


  • Overall Length: 7.625"
  • Blade Length: 3.25"
  • Cutting Edge: 2.875"
  • Blade Thickness: 0.13"
  • Blade Material: CPM S35VN
  • Blade Style: Drop Point
  • Blade Grind: Flat
  • Finish: Stonewash
  • Edge Type: Plain
  • Handle Length: 4.375"
  • Handle Thickness: 0.48"
  • Handle Material: Aluminum
  • Color: Black
  • Weight: 3.52 oz.
  • User: Right Hand
  • Pocket Clip: Tip-Up
  • Knife Type: Spring Assisted
  • Opener: Thumb Stud
  • Lock Type: Button Lock
  • Brand: Pro-Tech
  • Model: TR-5
  • Model Number: TR-5 SA.1
  • Designer: Matthew Lerch
  • Country of Origin: USA
  • Best Use: Everyday Carry, Tactical
  • Product Type: Knife

  • Drop point blade made with CPM-S35VN steel with a stonewash finish.
  • Thumb stud opener.
  • Black aluminum handle with jimping.
  • Durable button lock.
  • Deep carry pocket clip for tip-up carry.


Pro-Tech has added a spring assisted model to their Tactical Response lineup, the TR-5. Similar in design to the TR-4 auto, the TR-5 is smaller and more pocket-friendly. The assisted opening mechanism was developed by custom knifemaker and designer Matthew Lerch. Unlike most spring assisted knives, the TR-5 offers almost instant Assist engagement that is powerful. Sufficient force is required to activate the mechanism, providing an added measure of safety. Best of all, the Pro-Tech TR-5 Assist is legal to carry in most places.

This TR-5 model has a black anodized aluminum handle with a two-tone black back spacer/lanyard attachment, and a deep carry tip-up pocket clip. The blade is stonewashed and outfitted with a thumb stud opener. The plunge lock enables safe use and provides solid lockup. Pro-Tech's TR-5 is an impressive addition to their lineup and boasts their longstanding build-quality and performance.

Customer Reviews

Best Assist
Alan S. on Feb 18, 2022

If u ever handled a ProTech before u know the SNAP that knife comes with. This assist model no difference! Solid snap when fired, smooth lock release button. Solid aluminum frame with helpful jimping. The blade centered and sharp out of the box. Comes in a nice draw string pouch well greased for storage. Awesome drop point blade and good enough grip over all for edc use and self defense. I live in California so very rare for me to have a Pro Tech, but now I do!!!! Must get for any collector as well!

another great protech knife
john s. on Aug 1, 2016

I already have the tr-3 swat, rockeye auto and the CF sprint. The tr5 was a little hard to open at first but snaps open with authority with little effort after playing with it for a week. The build quality is just as impressive as all the other protechs And.the blade also came nicely ground and sharp as hell.I would highly recommend this to anyone that wants to own a auto without really having to buy one. lol

Nice but with issues
Joel M. on Nov 23, 2016

I have a CA legal protech auto and really like it, so I naturally wanted to move up to a bigger blade. As with all protech knives the quality of materials and build are top notch. The one major issue I have with this knife is that deployment is awkward and uncomfortable. Maybe I will become more proficient in time but for now I'm going to give my sore thumb a rest.

Blade HQ Copyright © 2022 Blade HQ. All rights reserved
Sale Banner
Give Feedback