Sons Of Liberty Gun Works East India Starter Kit .300 BLK Barreled Upper - 9"

East India Starter KitAt Sons of Liberty Gun Works we believe in Quality Mil-Spec or better parts. We believe there is no substitute for quality and that your gun should be built right the first time, ready for hard use right out of the box. We believe a quality Bolt Carrier Group and a quality, accurate and long lasting barrel are the heart of a Combat Grade weapon. We believe in properly tuned weapons using the correct gas system length and quality buffer system components such as the Vltor A5 system and Sprinco Tactical Buffer Springs. We believe in our products and we back them up with a lifetime warranty. Our weapons our meant to be used hard and go in harm's way, they won't let you down.The East India Starter Kit is meant as a building block for any build you wish to do. It is built with Hidden high quality components. At Sons of Liberty Gun Works we always tell our customers, its not what a rifle company tells you, it's what they don't tell you. Below you will find the complete specifications on the M4-SL. We have built our guns to run through years of hard use, and we have nothing to hide.Barrel: Sons of Liberty Gun Works 9" 4150CoMOV 1:7 MPI HPT BarrelCaliber: 300 BLK ChamberBarrel Steel: 4150 CrMoV (Chrome Moly Vanadium per MIL-B-11595E)Twist Rate: 1/7 Twist Six GrooveThread Pitch: 1/2-28 Threaded MuzzleGas Block: .750a ^2 Gas Block Journal with appropriately sized gas portBarrel Finish: QPQ Corrosion Resistant FinishBarrel Extension: QPQ coated M4 Feed Ramp ExtensionHigh Pressure (proof) Tested (HPT)Magnetic Particle Inspected (MPI)Upper Receiver:Material: Made from Mil-Spec 7075-T6 aluminum Cerra Forge forgings.Exterior Finish: Anodized to Mil-Spec MIL-A-8625F, Type III, Class 2, Hard Anodic Coating, Flat Black Dye, Non-Reflective, NiAc SealInterior Finish: Dry Film LubeT-Marks: Engraved T-MarksGas Block: Sons of Liberty Lo-Pro Gas block made from 4140 Steel and Nitride TreatedGas Tube: Sons of Liberty Melonited Stainless Steel