Description
CMMG .22 LR Barrel and Bolt Group Kit, 4.5" 4140 CrMo Barrel
General Barrel And Bolt Group Info: The barrel on a .22 LR AR-15 barrel operates under 'direct blowback' there is no gas system directly connected to a .22 LR AR-15 barrel for the system to cycle. By design, .22 LR AR-15 barrels are affordable and come in many sizes. Which includes some of the familiar barrel profiles found on standard or common AR-15 platforms. Building an AR-15 chambered in .22 LR is a great choice for training or your next Pistol Caliber Carbine build.
Brand Info: CMMG was established in 2002, when John, Jeff, Gretchen, and Stephanie Overstreet decided to create a quality AR rifle that can be afforded by everyone. Since that time, things have continued to get better and better. We have grown every year! CMMG is constantly looking for new ways to improve our products, processes, and company at large. Both our customer service and product lineup continue to be second to none, and all of our rifles and firearms parts are made in the United States from the best materials available. CMMG guarantees its products against defects in material or workmanship for the life of the product. CMMG Inc. will repair, replace or substitute any product(s) if a defect in material or workmanship is found.
About This Barrel And Bolt Group Kit: The CMMG .22 LR Barrel and Bolt Group Kit is everything you need to convert your existing upper to a dedicated .22LR. This kit is made by firearms enthusiasts and experts who spend time making products with the average shooter in mind. The barrel in this kit is crafted from 4140 chromium-molybdenum steel which is incredibly durable. The barrel has a 1:16 twist rate which is standard for the .22LR. This kit is a great, high-quality option for converting your upper without costing you an arm and a leg.
About the Profile: Medium - Medium Profile barrels are designed to have an even weight distributed from the beginning to the end of the barrel, this results in a rather tubular looking appearance but with identical rigidity and properties to a government profile barrel.
Barrel Classification: Pistol
Length: This Barrel is designated as a rifle barrel with an overall 4.5" length.
Caliber: .22 LR - This barrel is chambered in .22 LR, perfect for light recoiling pistol caliber carbines or rifles. .22 LR originated in the United States and is the most common ammunition sold in the world. The .22 LR Caliber is used for hunting and shooting competitions due to its short-range accuracy and minimal recoil.
Material: 4140 CrMo - Chrome-Moly, or simply "CM", is a low alloy steel that is great at withstanding high pressure and temperatures. It is also extremely corrosive resistant and contains the same elements as 4140 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: 1/2x28 - This threading is commonly found on barrels chambered in 5.56, .223, and .224. This will allow the installation of most muzzle devices such as flash hiders, blast cans, and compensators threaded to 1/2x28 threads.
Barrel Specifications:
Brand: CMMG
Model: .22 LR Barrel and Bolt Group Kit, 4.5" 4140 CrMoV Barrel
Platform: AR-15
Classification: Pistol
Caliber: .22 LR
Length: 4.5"
Handguard Compatibility: Freefloat
Profile: Medium
Twist Rate: 1:16T
Finish: Nitride
Material: 4140 Chrome Moly
Thread Pitch: 1/2x28
Bolt Group Specifications:
Compatibility: Designed to work with all dedicated .22LR barrels
Material: Stainless Steel
Operating System: Blowback
