Guntec USA AR 9mm Car Buffer and Spring Set Chrome. Guntec USA machined these AR15 Recoil Buffers from rugged stainless steel. The GUNTEC USA AR 9mm Cal Car Buffer and Spring Bundle comes with a carbine length Teflon coated chrome spring that guarantees proper function and a long lifetime of use. Keep your ammo cycling by slowing down fast-moving bolts with this GUNTEC USA AR 9mm Caliber Carbine Buffer and Spring Set. Specifications for Guntec USA AR 9mm Cal CAR Buffer and Spring Set: Manufacturer: Guntec USA Color: Chrome Fabric/Material: Stainless Steel Gun Model: AR-15 Length: 4 in Weight: 8.2 oz Included Accessories: Carbine Length Teflon Coated Chrome Spring Condition: New Features of Guntec USA AR 9mm Cal CAR Buffer and Spring Set: Carbine Length Teflon Coated Chrome Spring Included Stainless steel construction Package Contents: Guntec USA AR 9mm Cal CAR Buffer and Spring Set What firearm models does the manufacturer say Guntec USA AR 9mm Cal CAR Buffer and Spring Set is compatible with? The manufacturer says that Guntec USA AR 9mm Cal CAR Buffer and Spring Set is compatible with AR-15GUNTEC USA BUF+SPR-9: Ar 9mm Cal Car Buffer and Spring Set Chrome