Heckler & Koch MP5 vs PTR 9CT

1966–Present

2018–present

~2,000,000 estimated

Unknown

680 mm (26.8 in) stock extended, 550 mm (21.7 in) stock retracted (MP5A3); Varies significantly depending on variant.

368 mm (14.5 in) pistol only

115 mm (4.5 in) standard, various lengths depending on variant (e.g., MP5K: 102 mm (4.0 in), MP5SD: 146 mm (5.7 in))

225 mm (8.86 in)

2.54 kg (5.6 lb) empty (MP5A3)

2.65 kg (5.85 lb)

15, 30 rounds standard; 10, 20, and 40 round options available

30 rounds

Roller-delayed blowback, closed bolt

Roller-delayed blowback

Single-stage military trigger; SEF (Safe, Semi-automatic, Full-automatic) or Navy trigger groups available with burst-fire options

Single stage

Rotary drum rear, hooded front post

Drum rear sight, post front