I am pretty satisfied with my SG 543-1 carbine. It's 11 3/4" barrel isn't going to set any velocity or accuracy records, but it whacks the steel reliably out to 200m no problem and is a blast (literally!) at CQB distances.

Nice write up! Thanks for posting! I wonder if there’s any reports from those conflicts on how the 540’s performed.
Some swiss built did make it out.
Epps had a prohib 542 for sale that was stamped SIG rather than Manurhin.
Manurhin produced versions for civilian sale in european non-military calibers such as .222Rem and .243Win.
Portugal has also produced limited numbers of the 543 and 540 by INDEP of Portugal.
Tactical imports brought in some 542s. These are not marked "Elite".
Manurhin built a quick detachable scope mount designed especially for the 1970's era STANAG scope mounts such as the Swiss 4x24 or the ZF 4x24 Fero as used by the Bundeswehr built by Hensoldt, Karl Kapps and Schmidt and Bender. The Swiss 4x24, optics were made by Kern or Wohler and are incredibly rare.
The Manurhin quick detachable mount for the SG540 can even be used on the PE90 if a spacer is added to each mount tower. Additionally, Manurhin made a quick detach mount specifically for the SG542. The 542 mount is different and bigger than the 540 mount.
I wonder when these will be back in stock at the Calgary Shooting Centre?
I am pretty satisfied with my SG 543-1 carbine. It's 11 3/4" barrel isn't going to set any velocity or accuracy records, but it whacks the steel reliably out to 200m no problem and is a blast (literally!) at CQB distances.
542 is a nice one, especially if the original fixed stock is replaced with an ACR folder - the latter has a cheek riser and gives a lot better cheek weld
That's how I had my 542 set up - ACR stock was awesome for optics use. If I ever buy another I'll probably do the same. Too bad the ACR stock didn't work on the 540 or I would have had one on that rifle as well.
So how reliable are the conversion kits to allow AR15 mags in the 540? Do the mags need to be modified?
when i was younger the manurhin in 222 and 243 was easy to find. you can still get them on the second hand market. the 222 was great to shoot, never shot a 243.
my unit marsouin 4th company scorpions ... 21st rima got some at the same time of rpima (red beret) when they were stationned in ndjamena. later they were still on display in the armory but never used for training anymore we had the 49/56 and famas plus frf1 and frf2 ...
What was the problem with 540? Does it have a different stock interface?
Shouldve touched on Accuracy as well.
Nice write up but a too late unfortunately. The 542 hasn’t been imported in years and the ones that make it on the EE are asking stupid money for them.
Bartok - Does Elwood still have the prohib 540?
I can't for the life of me locate a factory bipod anywhere...