JMac Customs TS-8R Triangle Stock with Folding Mech 8in Black. (T)riangle(S)tock(8)inch(R)ise with our own 1913 folding mech (not assembled) Attaching a stock to a pistol makes it an SBR and requires NFA approval. You are responsible for knowing and following your local/state/federal laws Specifications for JMac Customs TS-8R Triangle Stock w/ 1913 Folding Mech: Manufacturer: JMac Customs Gun Make: Kalashnikov Color: Black Finish: Nitride Weight: 4.48 oz 12.5 oz Fabric/Material: 7075-T6 Aluminum Length: 8 in Condition: New Features of JMac Customs TS-8R Triangle Stock w/ 1913 Folding Mech 8'' Stock Package Contents: JMac Customs TS-8R Triangle Stock w/ 1913 Folding Mech JMac Customs TS-8RP+FM-SM-1913: TS-8R Triangle Stock with 1913 Folding Mech 8in Black