The Mauser MP40P is a semi-automatic pistol chambered in .22 LR with a 10-inch barrel and a 23+1 round capacity. It comes as a superset package that includes a red dot optic. The receiver accepts the included sight out of the box. 
 

Key Specifications 

• Brand: Mauser 
• Model: MP40P 
• Caliber: .22 LR 
• Action: Semi Auto 
• Barrel Length: 10 in 
• Capacity: 23+1 
   

Detailed Features 

• 10-inch barrel 
• 23+1 round capacity 
• Ships with red dot optic included 
• Superset package configuration

Owners of the Mauser MP40P in .22 LR tend to pick it up for its retro styling combined with the low-cost rimfire chambering. The inclusion of a red dot in the package deal gets praise for making it range-ready without additional expense, though some buyers note the optic quality is basic and many swap it out quickly.

The 10-inch barrel draws mixed reactions. Shooters who want a range pistol appreciate the longer sight radius and the reduced muzzle flip with .22 LR, but others find the overall size unwieldy compared to compact pistols. The 23+1 capacity is generally well-received for a rimfire pistol of this class.

Reliability opinions on the MP40P split between those who run standard velocity ammo without issues and those who report cycling problems with certain .22 LR loads. The general advice is to stick with higher-velocity loads and run a break-in period before expecting consistent feeding.