IDFblog reports that during an operation about a month ago, IDF forces raided a Palestinian weapons cache in Judea and Samaria, finding several improvised weapons and what appears to be a shop dedicated to constructing them. While not an arsenal by the standards of most of our readers, the improvised weapons include what appear to be Luty pattern or similar submachine guns sporting AR-15 pistol grips:

If you have an interest in scratchbuilt and homemade firearms, as I do, then follow the link!