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Aero Precision M4E1 vs SIG M400
Side-by-side technical comparison
Aero Precision M4E1
RiflesIn production
Overview
Spec
Aero Precision M4E1
SIG M400
Production
2015–present
2010–present
Units produced
Unknown
Unknown
Specifications
Spec
Aero Precision M4E1
SIG M400
Overall length
840–900 mm
840–910 mm
Barrel length
406 mm
406 mm
Weight
3.1–3.3 kg
3.2 kg
Magazine capacity
30 rounds
30 rounds
Action type
direct impingement
direct impingement
Trigger type
single-stage
single-stage
Sights
Optics-ready
Flip-up or optics-ready
Calibers
Aero Precision M4E1