@HKSniper11B
Since nobody has responded to your comment yet... Here we go:
milsurps.com is the best place to find info and some decent photos of L96A1s and PMs online. royalarmouries.org also has some good photos. Holts Auctioneers also hold some good quality photos of AIs that pass their way.
Mainstream PMs and L96A1s are identical actions but as a complete rifle, they are slightly different in terms of barrel, muzzle devices, and probably some other subtle differences. The earlier PMs had different stocks/chassis and also magazines. Prototype/test PMs had different firing pin+shroud assemblies, but otherwise generally the same.
I have only ever seen one other photo of a PM/L96A1 with pistol grip. The caption with that photo stated that a small European country had ordered them.
"ABL" likely refers to ABL as in the Belgian Army.
Interestingly enough, that exact rifle came up for sale on Holts last year:
https://www.holtsauctioneers.com/asp/fullcatalogue.asp?salelot=A1123+++1155+&refno=210176&image=0
It is a fully pledged AW rifle, although apart from the cutouts for the action-mounted safety, the PM/L96A1 action bodies aren't actually any different to a AW. There are in fact AWs that were built by converting L96s.
Finally, the only official civilian AI rifle that uses the same actions as the PM/L96A1s are the very early UIT (pre-ISSF) 300m target rifles and NRA (UK) target rifles (think Palma rifle). They usually came in Walther wooden stocks, but some of the very last ones were built on Anschutz Supermatch stocks. Steve Houghton's book suggests that some rejected/prototype PM/L96A1 actions or complete actions waiting to be built into sniper rifles were repurposed into UIT CISM rifles by Malcolm Cooper, unbeknownst to the two other business partners. I have never seen a CISM rifle using the PM/L96A1 action before except in a brochure, but CISM rifles using the later Coopermatch action are more common. I have a UIT Standard Rifle and hope to add the others into my collection at some point.