Needed modification
This required some additional filing to make if fit into the slots on the J Frame rebound slide
Works Fine with Adjustments
Depending on your model, you WILL have to adjust the size of the slot. A hand file, or a rotary tool with an abrasive disc, to slightly widen and deepen the slot for a S&W J Frame will work well.
Good Concept, but Needs Wider Gap
The concept behind this tool is great - make it easy to remove the trigger return spring on a j frame revolver without damaging the retaining post. When I tried to use the tool, I discovered the gap on the tool is not wide enough to go around the post on a model 638 Airweight. Not wanting to return the tool, I pried open the gap a little, knowing that too much would weaken the metal and break the tool. I was able to use the tool, but Brownells would do well to modify the tool to make it useable on all j frames. You cant afford to put pressure against the post on an Airweight, lest you break it and render the firearm useless. Great idea, just needs tweaking a little.
Very Handy
Needs a little filing but very useful. Can be used for other springs also.
Useful tool, but not magic
This is a nicely configured tool for lifting the rebound spring out, and for its final positioning in the frame. However, I find that for initially compressing the spring to catch its edge on the frame post, a #2 Phillips screwdriver works better because the spring end is constrained on the tip. After snagging a spring edge on the frame post, I switch to the tool for final positioning. Also, I had to open up the slot in the tool slightly with a file before it would straddle the frame pins in the 442 & 642 on which I've used it so far. This isn't a magical do-everything tool, but I'm glad I bought it and would recommend it you you change many rebound springs.
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Simple tool that makes removing the Rebound slide much easier without the spring flying accross the room. Also make installation a snap. A must have tool for anyone that works on S&W Revolvers.