The M7A was designed in 1968 by Robin Heard and Gordon Coppuck. The chassis was a bathtub-type monocoque made from 22-gauge aluminium alloy and 20-gauge magnesium alloy panels glued and riveted together and to three steel bulkheads. The Ford Cosworth DFV engine was used as a stressed part of the chassis, bolted directly to the rearmost bulkhead. The M7A was used by McLaren works team in 1968-69, and a few cars were sold to a couple of private team. In 1969 South African Grand Prix, the first round of the championship, one M7A was driven by local driver Basil van Rooyen entered by Team Lawson. The South African was one of the leading saloon car drivers of the local scene. He raced twice in the Formula 1 World Championship when it visited Kyalami in 1968 and 1969. In 1969 van Rooyen qualified an impressive ninth for the South African GP but retired just after 12 laps due to breaks failure. He also drove in South African F1 Championship winning 4 Championship and 2 non-Championship races in 1968-69.
| Season | Series | Event |
| 1969 | F1WC | South African GP |
| Driver | No. | Entrant |
| Basil van Rooyen | 18 | Team Lawson |
| Scale | Manufacturer | Collection |
| 1:43 | Spark | |
| Cat. No. | Quality | Rarity |
| S3117 | 
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