5.56mm Blank Rounds

When the. 5.56mm round was introduced into British Army service for use with the new SA80 rifle there was of course a blank round introduced alongside it. Initially the British Army used the L1A1 blank which was boxer primed and had a load of 0.5 gr as of NPP30 double-based propellant. This came into service in 1985 but was replaced by the L1A2 blank in 1992 which had 0.48 grams of nitro-cellulose single-base propellant. Around the turn of the 21st century the specifications changed again and the British Army now uses L18A1 blank ammunition, although I have been unable to find out exact specifications for this ammunition. The rounds themselves are made of brass, with. The same overall length as a live round:imageThe heads of each round are crimped, with a waterproofing agent to seal the end of the round from moisture entering:imageThe head stamp of the round indicates it was made by Radway Green in 2011 and is the L18A1 round:imageThese rounds were issued in cardboard boxes, each holding twenty rounds. These boxes were broken open and magazines loaded from these. The SA80 has specialist blank magazines that only work with blank ammunition and cannot take ball rounds for safety purposes. In order to load it was typical to empty the rounds out into a safe receptacle such as a helmet or beret so they didn’t get lost or dirty before the magazine was filled.

One comment

  1. The L18 blanks are actually slightly shorter than the live round, I guess it’s to fit in the specialised mags. It’s interesting that the American made 5.56 blanks that the US military uses are much shorter (around 7mm), and are crimped almost at the top of the cartridge shape.

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