M32 motorway along the viaduct, while surveying work was carried out in 2016 during the Metrobus junction refurbishments. The M32 has been criticised for severing longstanding links in Bristol. Older residents have claimed that formerly close-knit communities such as Easton have been shut off by the imposing concrete barriers next to the motorway. It has been criticised for running alongside the grounds of Stoke Park, spoiling the local atmosphere and requiring part of the estate including the Duchess Pond to be demolished. In 2008, Jeremy Isaacs claimed the motorway was a reason that Bristol did not win the European Capital of Culture
M4 carbine Marine Corps Infantry Automatic Rifle testing, the Colt IAR displayed a MRBS of CLASS I/II Stoppages of 952 rounds, with a MRBEFF of Class III Stoppages of 60,000 rounds. An array of firearms accessory makers have offered gas piston conversion kits for the M4. The claimed benefits include less needed lubrication for the bolt carrier group to run reliably and reduced fouling. The argument against it is increased weight and reduced accuracy. The Enhanced M4 uses an articulating link piston operating system. Complicating the Army search for higher reliability in the M4 is a number of observations of M4 gas