The only difference in fit information for the extended handguard is the following provided by Midwest Industries:
"PLEASE NOTE - THE EXTENDED MI-CRPC9X HAND GUARD IS NOT COMPATIBLE WITH FIBER OPTIC FRONT SIGHTS. THE HAND GUARD OBSTRUCTS THE FRONT SIGHT FIBER OPTIC PIN."
The Midwest Industries Ruger PC9 Combat Rail is only compatible with Ruger PC9/.40 Take Down carbine models.
The Midwest Industries Ruger PC9 Combat Rail is only compatible with new Ruger PC9 9mm/.40 cal Take Down carbine models.
The Midwest Industries Ruger PC9 Combat Rail features 3 built in anti-rotation QD sockets and includes a 5-slot polymer M-Lok rail. For more information email us at Techsales@opticsplanet.com.
Yes, the Midwest Industries Ruger PC9 Combat Rail will work with the VISM Ruger PC Carbine RMR and Rear Sight Base.
Yes, the Midwest Industries Ruger PC9 Combat Rail is designed to not effect the factory sights on the Ruger PC9 once installed.
yes.......
Providing you attach the Picatinny rail you should have no problem with attaching sights.
Yes, they should work well together.
Yes, it is compatible with the Ruger PC40 Take down model. Here is some fit and compatibility information provided by Midwest Industries regarding these handguards:
"Additional Installation Tips & Instructions
We have found during dozens of installations that there are variations in the Ruger® firearms. These variations will in no way effect the function or performance of the Ruger® PC9™ carbine. Please remember this firearm is a takedown model so perfect alignment may not always be achieved. We have found for best alignment, start by aligning the MI handguard with the top edges of the factory plastic stock. This may take a few attempts and some patience but will produce a very satisfactory result. We have also noticed some variations in the rear sights of these rifles. They are sometimes not installed perfectly straight to the bore. This can be corrected by removing the peep sight portion and straightening out the base. Some rifles will also show a left or right cant with the whole barrel assembly when locked into place. You can see this by looking from the rear of the gun and using the top rail as a reference surface. Neither the function of our handguard or the guns performance will be effected by these slight alignment variations of the factory manufactured firearms. On a final note if after installing the handguard on your firearms you still have any play please check that the tension adjustment ring is properly adjusted on your rifle. Additional information and photos can be found on our website.
Only compatible with new Ruger® PC9™ 9mm/.40 cal Take Down carbine models"