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990 SPX Magpul - Class 3 vs Heckler & Koch 512
Side-by-side technical comparison
990 SPX Magpul - Class 3
ShotgunsIn production
Heckler & Koch 512
ShotgunsDiscontinued
Overview
Spec
990 SPX Magpul - Class 3
Heckler & Koch 512
Production
2015–Present
1968–1975
Units produced
~150,000 estimated
Approximately 3,000
Specifications
Spec
990 SPX Magpul - Class 3
Heckler & Koch 512
Overall length
965 mm (38 in) with stock extended, 889 mm (35 in) with stock collapsed
1245 mm
Barrel length
508 mm (20 in) standard, 457 mm (18 in) Compact variant
710 mm
Weight
3.40 kg (7.5 lb) empty (standard), 3.10 kg (6.8 lb) Compact
3.60 kg
Magazine capacity
5+1 rounds standard internal tube, 7+1 with extended tube, 8+1 with aftermarket magazine tube
5 rounds
Action type
Pump‑action, long‑stroke recoil operation with chrome‑lined barrel and stainless‑steel bolt
Roller-delayed blowback
Trigger type
Dual‑stage, single‑action trigger with adjustable pull weight
Single-stage
Sights
Fiber‑optic front bead, rear ghost‑ring sight; optional Picatinny‑mounted night sights
Bead front (ventilated rib)