"CZECH BRNO MODEL ZK420 EXPERIMENTAL SEMI AUTOMATIC RIFLE SN 1 WITH SCOPE. SN 0001. Cal. 8 mm. This Czechoslovakian model ZK420-S was an experimental semi automatic rifle made by the Czech that appears to have incorporated some features of the American M1 as well as similarities to the German K-43. It features a rotating bolt which is with a gas operated recoil system, an adjustable rear sight graduating from 100 to 1,000 meters, and is also equipped with a German style scope. Features a somewhat quick detachable scope mount with rings that are very similar to the US model P-4 with a couple of simple thumb tightening screws. Rifle appears to have a very thin coat of gray Parkerizing on it and is in excellent overall condition. The bolt assembly appears to be a mismatch because it has the number "29" on it but being an experimental it could very well be an inspector mark or a proof mark. PROVENANCE: Stern Collection. CONDITION: Receiver retains 98% of a very thin grayish green phosphate finish with the bbl being similar except with some patina. The gas cylinder and handguard retaining assembly as well as the magazine and trigger group show significantly phosphate finish. The upper handguard assembly shows almost new with just a couple of small nicks that you can only see under a very good light. The buttstock is also in excellent condition, showing only a couple of scratches and one small ding behind the wrist. The phosphated checkered buttplate shows nearly new with the blued screws almost new. The telescope shows about 98% of the original blued finish with clear but slightly dirty optics and a very pliable rubber eye piece. The scope elevation cap shows no finish loss but does have a couple of small dings in it. It is accompanied by a small pouch with a cleaning brush in it and a cloth sling that show nearly new. All in all a very fine, what I believe to be, experimental carbine that would be a great addition to a military carbine collection. 4-34057 BK135 (3,000-5,000)"
Reloading kit for pinfire cartridges (7mm & 9mm)
How does it work?