The short Pachy bars for the early barrels with just one standoff does not provide a very secure mount to float the forend off the barrel. Their longer bars for barrels with two standoffs is secure, but doesn't float the forend without shims and reworking the forend wings.
The Bullberry & Stratton hangers are similar (Stratton learned the bis as part of the Bullberry crew before switching to VVCG and going on his own later when it went out of business). Once mounted on the barrel they were originally designed to securely "float" the custom wood forends off the barrel while using a single mounting screw for the forend. There are two versions of hangers based on barrel standoff spacing to work on both handgun and carbine configurations, but not a version for the early one standoff barrels. To use these hangers with the Pachy forends the hanger needs to be both flipped end for end and rotated 180 degrees from how it's mounted for custom wood (flipping it changes the placement of the mounting hole, rotating it stands the forend off the barrel further). Still doesn't completely float the Pachy forend without shims though, and reworking the forends wings that drag on the frame.
The after market hangers are more versatile than the Pachy bars in that they will securely mount custom wood, Pachy's and some early factory forends to two standoff barrels.
So what to do with an early, longer one standoff factory barrel you want a secure, floated forend on? Live with it as is, trade it off for a two standoff barrel or add standoffs.
