- All-steel construction, 449 g, 39 mm diameter
- Adds 166 mm, total length 181 mm, over-barrel 15 mm
- Built for extended strings on semi-automatic rifles
- Not for dismantling; follow general cleaning instructions
The AR 40-4 weighs 449 g with a 39 mm diameter. All-steel construction built to handle extended strings on semi-automatic rifles. Adds 166 mm to the muzzle, runs 15 mm over the barrel, total length 181 mm. Modular assembly but not user-serviceable; attempts to dismantle void warranty.
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