Ruger goes Papasha
Ruger has added new PC Carbine models to their catalog including those with free-float handguards and .40 S&W chamberings.
The new models, described by Ruger as adding “improved utility for home defense and competition,” all feature standard black synthetic stocks, 16.12-inch barrels and an interchangeable magazine well system that allows the rifle to accept either Ruger SR-series or Glock mags. Likewise, each has an easy takedown system that allows the short, 34.37-inch Carbine to break down for even more compact stowage.

The biggest difference is in those with the aluminum Magpul M-LOK free float handguard. For multi-state compliance, Ruger also has variants in both the standard and Magpul handguard variants with non-threaded barrels and 10-round magazines.
In my opinion, the handguard looks a lot like the one used on Georgy Shpagin’s PPSh series of SMGs, exemplified by his PPSh-41, which was nicknamed papasha (daddy) due to its designation.

A crew boy of Soviet destroyer-leader Tashkent on guard during the Siege of Sevastopol– dig the PPsh
Anyway, more in my column at Guns.com.