The Sig Sauer P322 is a single-action semi-automatic pistol chambered in .22 LR with a 4-inch threaded barrel and a polymer frame. It has a 20+1 capacity, ships with two magazines, and comes optic-ready with the ROMEO RS Compact red dot included. The threaded barrel uses a 1/2x28 adapter and the pistol is suppressor ready. 
 

Key Specifications 

• Brand: Sig Sauer 
• Model: P322 
• Caliber: .22 LR 
• Action: Semi Auto 
• Capacity: 20+1 
• Barrel Length: 4 in 
• Color/Finish: Black (Anodized) 
   

Detailed Features 

• 4-inch threaded barrel with 1/2x28 adapter, suppressor ready 
• ROMEO RS Compact red dot optic included 
• Adjustable fiber optic sights 
• Optic-ready slide cut 
• Polymer grips; includes 2 magazines

Owners of the P322 tend to focus on the out-of-the-box optic package. Having the ROMEO RS Compact red dot included is a point that comes up often in comparison to other .22 pistols at a similar price. The threaded barrel and suppressor-ready configuration also get repeated mentions, particularly from owners who pair it with a can.

The single-action trigger on the P322 draws mostly positive feedback for its short reset, though a smaller number of owners feel the overall trigger feel is lighter than they expected from a Sig. The polymer frame and 20-round magazines make for extended range sessions, and most owners report reliable feeding across standard velocity .22 LR loads. High-velocity or bulk hollow-point .22 LR can occasionally cause cycling issues, which is a common .22 semi-auto limitation that P322 owners mention.

Value is generally rated well given the included optic. Some buyers note the P322 is a purpose-built trainer or plinker platform, not a direct-blowback defensive tool, and approach it accordingly. Those who factor in the ROMEO RS price against the pistol's retail cost tend to view the package as well-priced.