Heckler & Koch MP7 vs SIG Sauer MPX

2001–Present

2015–present

~50,000 estimated

Unknown

418 mm (16.5 in) stock retracted, 638 mm (25.1 in) stock extended

20 in (4.5 in barrel, stock collapsed)

180 mm (7.1 in)

4.5 in or 8 in

1.5 kg (3.3 lb) empty

5.0 lbs

20, 30, or 40 rounds

30

Gas-operated, rotating bolt

Gas-operated, rotating bolt

Single-stage

Selective fire

Flip-up iron sights, Picatinny rail for optics

Flip-up iron / optics