Purchased my K-15 in 7RM from Robert Kleinguenther himself in the late 70's. Like your friend's, mine was probably a solid 99%. Sold it here a couple years back for $1,500. Those TX boys are familiar with them and love them. Some history:
Stuart Otteson's 2-volume book entitled, "The Bolt Action" has information on these fine rifles favored by both collectors and hunters. Vol 2 is where both the K-14 and K-15 rifles are dissected and a full report given, including a detailed history. KDF was incorporated in 1970 in Seguin, TX after Bob Kleinguenther convinced Voere in Vohrenenbach, Germany that their rifle model, the Shikar, was not going to be successful and that both he and they should set about designing a new rifle to be marketed by KDF in the U.S. In 1972, the design was approve and sent to production with a model number of K-14 for Kleinguenther project number 14. In Europe, it was referred to as M2145. About 7,000 rifles were produced between 1973 and 1977 with final sales taking place as late as 1978. Robert Kleinguenther's years as a chief designer and engineer for Weatherby are apparent in his designs. The K-15 followed.
The K-15’s stellite bolt is a unique balanced three lug design later copied by many, including Mauser 225 and 03, Sako 75- 85 and the Thompson/Center ICON. The action is as smooth as a silk scarf sliding off polished marble. This rifle utilizes a version of the drop box magazine and comes with the original magazine box that feeds like it has eyes. It has an excellent adjustable trigger which also functions as a bolt stop/release. With the rifle completely unloaded, open the bolt and pull back on the trigger which lowers a plunger type stop that rides in a slot in the bolt. The bolt can then be fully removed. The stock has a Monte-Carlo cheek piece and rosewood with white spacers at the forend tip and pistol grip cap.
Page 1094 of the 2011 Blue Book of Gun Values lists this rifle at $1,375 (100%) and $1,100 (98%).
Good luck with your sale....
