rbmorse
Member

Jpoint 4 on my Model 986.
Installation was simple. The instructions are sparse, but adequate and written in proper English. The unit is well packaged, with each of the pieces parts in it's own little section in the blister pack, then packaged in a padded envelope.
This isn't on JP Enterprises, but when delivered local winds were 22kts sustained, gusting to 40. The UPS dweeb just dropped the envelope on the porch. Had I not been home so the dogs could tell me that either the UPS truck or Godzilla was out front (same bark for both) I have a feeling some other lucky homeowner in the next county would have received a free optical sight and I would be pursuing a lost shipment claim.
The mounting adapter kit for pre-drilled Smith and Wesson revolvers fit perfectly. No monkey-motion required. Mount is held in place by three screws, two on the front tang and the third is under the sight. Uses the same size screwdriver blade one needs to properly remove the stock S&W adjustable rear sight.
The S&W revolver kit comes with one, 1 degree shim to change the sight angle, if required. Additional shims can be stacked as required and JP sells kits of 5 and 8 shims complete with appropriately longer mounting screws.
If I had been thinking I would have realized they probably included the one shim for a reason, but I mounted the Jpoint without it only to discover on the range that there wasn't enough travel in the elevation adjustment to properly zero. Installing the shim took less than a minute. With the fat end to the rear (the shim, not the shooter), and at the recommended for pistol 10 yards, the Jpoint is close to zero with the adjuster at mid-point.
The zero-in process took very little time and 21 rounds, handheld. The first group was a little low, I over-adjusted on the second group (doesn't take much) and the third group was pretty well centered. Never touched the windage adjustment.
I had brought a stand and was intending to use it, but it just wasn't necessary although it probably would have saved some time and a few rounds. A bag as a front rest would work fine, too.
Very happy so far. I have the 4 MOA model and the dot is easy to see both inside and outside in bright conditions. I'm mildly astigmatic so the dot shape isn't perfect, but it's more than good enough and obscures less of the target point than the FO sight.
Held zero overnight. Haven't tried removing/re-installing the sight again to see if it will hold zero through that process, but the composite material mounts have no detectable slop and the mounting screws are self-centering.
I'm going to try it in different conditions before I make a final decision about leaving the Jpoint on the 986, but I am going to remove the SDM FO front sight shown in the picture and remount the Patridge blade. Two red dots up there is just confusing.