Luth-AR AR-15 Gunsmith Kit. The kit includes all the parts necessary for assembling customizing and maintaining your AR15. With high-quality durable components this kit is ideal for both beginners and experts. The compact design makes it easy to transport and store while the comprehensive range of parts ensures you can handle any job. Specifications for Luth-AR AR15 Gunsmith Kit: Manufacturer: Luth-AR Weight: 4 lb Fabric/Material: Aluminum Caliber: 5.56x45mm NATO Package Contents: Luth-AR AR15 Gunsmith Kit Buffer Retainer x10 Buffer Retainer Spring x10 Bolt Catch Spring x5 Bolt Catch Buffer x5 Bolt Catch Roll Pin x5 Detent Spring x20 Takedown Detent x20 Pin Front Pivot x5 Disconnector AR15 x5 Trigger Spring x5 Pistol Grip Screw x3 Pistol Grip Screw Washer x3 Selector/Ejector Spring x10 Detent (Selector) x10 Hammer/Trigger Pin x10 Pin Rear Takedown x5 Disconnector Spring x5 Hammer Spring x5 Gas Tube Roll Pin x10 .223/5.56 Crush Washer x 5 Ejection Hinge Pin Snap Ring x 10 Ejection Port Cover Pin x 5 Ejection Port Cover Spring x5 Roll Pin Charging Handle x5 Charging Handle Latch Spring x5 Charging Handle Latch x5 Bolt Gas Rings (30 Pack) x2 Extractor Pin x5 Ejector Roll Pin x5 Ejector x 5 Extractor AR15 x5 Extractor Spring Assy w/Insert x 10 Extractor ORing AR15 x10 Bolt Carrier Gas Key Screw x10 Firing Pin AR15 x5 Firing Pin Retaining Pin x5 Cam Pin x3 Delrin Punch x 1 Luth-AR TL-GSK: AR-15 Gunsmith Kit