M4 motorway not signed, European route E30 includes most of the M4. The M4 has two sections of smart motorway. The one between junctions 19 (M32) and 20 (M5) north of Bristol has variable speed limits and a part-time hard-shoulder. Completion was in summer 2014. The section between junctions 24 and 29 in Newport has variable speed limits. In 2010 it was announced that a smart motorway would be constructed between junctions 3 and 12, with work starting in Autumn 2018. This will be the longest smart motorway scheme in the United Kingdom, with a length of 51km (32 miles). Work is
Benelli M4 almost 8 inches, allowing easier storage and transportation; furthermore, it permits better maneuverability around tight corners and over obstacles. The M4 is also available with a fixed stock (pistol grip and semi-pistol grip styles are both available). The M4 is no longer sold today with the skeleton fixed stock (model M11707) to civilians. Benelli only sells the M4 with a fixed pistol grip style tactical stock in the United States. However, the collapsible butt stock can be purchased by civilians in Canada. The rail interface system or Picatinny rail, built into the top of the shotgun accepts scopes, laser illuminators,