990 SPX Magpul - Class 3 vs Remington Model 1100

2015–Present

1963–present

~150,000 estimated

965 mm (38 in) with stock extended, 889 mm (35 in) with stock collapsed

1245 mm

508 mm (20 in) standard, 457 mm (18 in) Compact variant

660 mm

3.40 kg (7.5 lb) empty (standard), 3.10 kg (6.8 lb) Compact

3.4 kg (7.5 lb)

5+1 rounds standard internal tube, 7+1 with extended tube, 8+1 with aftermarket magazine tube

4+1 rounds

Pump‑action, long‑stroke recoil operation with chrome‑lined barrel and stainless‑steel bolt

Semi-automatic

Dual‑stage, single‑action trigger with adjustable pull weight

Single-stage

Fiber‑optic front bead, rear ghost‑ring sight; optional Picatinny‑mounted night sights

Fixed bead