WTS: HK53 A3 Parts Kit w/ #15 Locking Piece (All German). Barrel/Trunnion is in excellent condition and includes latest Gen A3 Stock, Highly desirable #15 locking piece, and latest 4-prong flash hider. Please respond to this post with "I'll take it", followed by a PM. Payment is certified check or personal check (must clear prior to shipping) Price is $4600
Shipped in continental USA.