Starter Kit Featuring:
+ ELD Performance 16" .458 SOCOM 1:14T Government Profile
+ Gas Tube + Gas Block
+ Helius Tactical 1776 Series 5/8x32 for .450 Bushmaster & .458 SOCOM w/ Crush Washer
ELD Performance 16" .458 SOCOM 1:14T Government Profile
General Barrel Info: The barrel originally operates under a 'gas impingement' system' by tapping gas off of the barrel and cycling it back through the gas system to assist the bolt carrier in unlocking and extracting the spent cartridge. Barrels come in four different specifications for gas systems, Pistol, Carbine, Mid-Length, and Rifle. Barrels vary between profiles as well as from Government, to Heavy, and Slim. Thanks to the modularity, you can choose different calibers starting with the barrel, each with its specific twist rates. Choosing your barrel for your next build has never been easier.
About This Barrel: This barrel is 16-inches long and chambered for .458 SOCOM. It operates on a carbine gas system and has a 1:14 twist rate. This government profile barrel is made from 4150 CMV with a nitride finish which makes it strong, durable, and incredibly reliable. For your next .458 SOCOM build you will want to consider this barrel.
About the Profile: Government - The government barrel profile is lightweight under the handguards, until just before the gas port. After the gas port, it gets heavier, out to the muzzle.
Barrel Classification: Rifle
Length: This Barrel is designated as a rifle barrel with an overall 16" length.
Caliber: .458SOCOM - This barrel is chambered in .458 SOCOM, a big-bore cartridge originally developed from .50 Action Express. .458 SOCOM was designed to be used on the AR-15 Platform to deliver more ballistic energy on impact at supersonic speeds. .458 SOCOM can be used with a standard buffer, buffer spring, & STANAG magazines.
Material: 4150 CrMoV - Chrome-Moly Vanadium, or simply "CMV", is the official mil-spec gun steel developed by Colt Firearms for the military-issued M16 and M4. It contains the same elements as 4150 steel. It also contains Vanadium. Vanadium significantly increases the strength, hardness, and high-temperature stability of the steel.
Finish: Nitride - Nitriding is a process during manufacturing that diffuses nitrogen into the steel to make a case-hardened surface for improved resistance and strength. A Nitrided barrel typically has a gloss black texture.
Thread Pitch: 5/8x32 - Common on .450 Bushmaster and .458SOCOM barrels this threading will allow the addition of blast cans, flash hiders, compensators, and other muzzle devices.
The Gas Block on your AR-15 / AR-10 style rifle is an integral part of the gas system that allows your rifle to cycle. By tapping off gas from the barrel and diverting it back into the gas key of the bolt carrier group, there is enough inertial force to unlock the bolt carrier, send it rearward to the recoil assembly, and extract and pickup another cartridge to fire.
About this Gas Block: This gas block is machined with a .875 Gas Block Journal. .875 Gas Block Journals are found on both AR-15 barrels chambered in .223 Remington, 5.56 NATO, and .300 Blackout; and AR-10 barrels chambered in .308, 7.62 NATO, and 6.5 Creedmoor. This Gas Block Journal is known for its reliability it assists the rifle function in regular and adverse conditions. .875 Is larger than standard .750 gas blocks and will tap more gas off from the barrel. This gas block has a 'low-profile' design and is made to fit underneath a free-float handguard.
Gas Block Journal Size: This gas block is a larger than average .875 size gas block.
Platform: This gas block will work on both AR-15 and AR-10 barrels, for .308 and 6.5 Creedmoor barrels, be mindful of possible tolerance issues in the barrel profile.
Profile: This Gas Block is 'low-profile' and designed to fit underneath freefloat handguards.
Finish: Phosphate - This gas block uses a phosphate finish, making it have improved rust and corrosion resistance. Phosphate finishes typically make the part have a matte finish.
Attachment Style: Slide On - This gas block has a fixed size and must slide on from the front of the rifle and is secured in place with 2 set screws near the bottom.
Material: Steel - This gas block is made from hardened & tempered steel, providing the strength and rigidity to withstand forces of expanding gasses and vibration from the rifle or pistol under operation.
DISCLAIMER: **Before purchasing, please be mindful of possible tolerance differences resulting from your handguard profile, barrel profile, gas length, and barrel Gas Block Journal.**
Helius Tactical 1776 Series 5/8x32 for .450 Bushmaster & .458 SOCOM
The .450 Bushmaster and the .458 SOCOM are both very powerful rounds, and if you know anything about the comparable .45-70 Government, you know that it can deliver quite a lot of recoil, noise, and muzzle rise. By looking into a muzzle device with a 5/8x32 thread to fit these guns you can utilize these two rounds while feeling less recoil, hearing less noise, and being able to return to target quicker.
About This Muzzle Device: Muzzle Brake - A muzzle brake is designed to reduce the amount of recoil you feel when you fire your weapon. A muzzle brake has slots or holes called ports cut into the sides of the device that allows the escaping gases to move in a way that helps to reduce the recoil felt. A quality muzzle brake can significantly lower the felt recoil in your weapon. Which is one of many reasons why gun owners make this device a key part of their collections.
Threading: 5/8x32 is the most common thread type for .450 Bushmaster and .458 SOCOM
Finish: Manganese Phosphate - Manganese Phosphate finishes are used on barrels to protect against corrosion and wear. Manganese Phosphate finish is considered for its toughness and is used in multiple different applications such as aerospace, ordnance, and other firearms-related parts.
Chambers: This Muzzle Brake has 3 chambers to catch the expanding gasses and divert them to the sides of the shooter, reducing recoil and increasing controllability.
Ports: This Muzzle Device has 3 ports to compensate for the felt recoil and reduce muzzle climb by pushing the barrel back down, making the shooting experience feel flat without jumping off target.
The handguard is an essential piece to any AR-15 custom build. Some of the most popular types of handguards are the freefloat handguards(LINK [https://www.mmcarmory.com/Freefloating_c_3464.html]). These types of handguards cover the barrel of the gun and attach to the upper receiver by a barrel nut. Handguards on an AR-15 build perform many crucial functions. One of these functions is that of protecting the shooter's hand from the heat of the barrel. The handguard also provides something to hold on to which gives increased stability to the shooter. Each handguard comes with attachment points for sights/optics while still saving space for additional accessories to be attached which can add to the aesthetic appeal of the build.
It is recommended that handguards cover completely the gas system of the AR-15 so when shopping for a handguard please keep in mind your gas system length. Please visit our AR-15 & LR-308 Upper Build Kits (LINK [https://www.mmcarmory.com/ar-15-lr-308-upper-build-kits.html]) page if you want to purchase one of our pre-designed upper build kits equipped with a handguard.
About this Handguard: The Avalon from Davidson Defense is an AR-15 Freefloat Handguard 15" long and machined with an M-Lok accessory mounting system.
Mounting System: To provide firm and simple mounting of different accessories in a variety of different positions, the Avalon takes advantage of the M-Lok mounting system
Cuts: To keep structural integrity intact while still saving weight, slimline cuts were designed into this Avalon handguard.
Material of Handguard: Due to the need to have light yet strong handguards, the Davidson Defense Avalon AR-15 freefloat handguard is constructed from 6061-T6 aircraft-grade aluminum extrusion.
Type of Top Rail: The Avalon Handguard is CNC machined with a partial top rail allowing for modern hand over grips to be more comfortable.
QD: To simplify the attachment/detachment of your sling, the Avalon handguard comes with 4 QD mounts already machined into it.
Includes: Mounting System, Handguard, Barrel Nut.
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