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HK MP5SD vs Welrod

Side-by-side technical comparison

Overview
Spec
HK MP5SD
Welrod
Production
1974–present
1943–1945
Units produced
Unknown
Approximately 2,800
Specifications
Spec
HK MP5SD
Welrod
Overall length
790mm (31.1 in) stock extended
369mm (14.5 in) Mk II
Barrel length
146mm (5.7 in) — ported, inside suppressor
~95mm (3.75 in) effective rifled, inside suppressor tube
Weight
3.5 kg (7.7 lb)
1.1 kg (2.4 lb) unloaded Mk II
Magazine capacity
15 or 30 rounds detachable
5 or 8 rounds single-stack (grip insert)
Action type
Roller-delayed blowback, closed bolt
Bolt-action, manually operated rotating bolt
Trigger type
Selective fire (safe, semi, full auto or 3-round burst)
Grip safety + manual trigger
Sights
Hooded front post, adjustable diopter rear
Minimal rudimentary sights — designed for point-blank use
Calibers