High quality components and precise manufacturing make Rise Armament parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on.
General Info: An AR-15 bolt carrier group is a piece of a firearm that houses many key parts such as the firing pin, gas key, cam pin, extractor, and bolt. With all these pieces working together the BCG can grab and feed another round out of the detachable magazine chamber. During the extraction of a cartridge, the BCG works to absorb the force of the explosion by expanding gas in the carrier. Throughout this process, gas is tapped off from the barrel and sent into the cup inside of the gas key which creates an inertial force that sends the Bolt Carrier Group back into the buffer tube. This entire process helps to reduce recoil.
About this BCG: This BCG is an AR-15 compatible design, allowing use with .223 Remington, 5.56 NATO, .300 Blackout, & .350 Legend cartridges. The standard AR-15 bolt carrier is also machined from 8620 Alloy Steel and is completed with a nickel boron finish. This BCG comes with the ability to be full-auto compatible and also features forward assist notches. MPI testing has also been done to ensure that there are no structural flaws to this BCG.
Caliber Compatibility: .223 Rem, 5.56 NATO, .300 BLK, .350 Legend - This BCG is standard for the .223 Rem, 5.56 NATO, .300 Blackout, .350 LGND calibers, and is interchangeable between all 4 simultaneously. This includes .22 Nosler Chambered AR-15s and .223 Wylde rifles.
Finish: Nickel Boron - Nickel Boron Bolt Carrier Groups are popular for their incredible strength and reliability under minimal or zero lubrication.
Material: 8620 Alloy Steel - Body - 8620 Steel is a carburized alloy steel meaning carbon was added to increase hardness of the steel. 8620 is known for its high case toughness and high core toughness. Made mostly of nickel concentrate, this steel can easily withstand the firing stress of the BCG under operation.
Forward Assist Notches: This BCG comes with forward assist notches that allow the forward assist on the upper to contact the BCG, pushing it forward and locking the bolt into place. These forward assist notches can also help clear malfunctions in a speedy manner when the BCG becomes jammed.
Gas System: Direct Impingement - Direct impingement is the process of directing the gas created during the operation of a firearm through the barrel, gas block, gas tube, and eventually into the BCG again to cycle the action and prepare the firearm for another round.
Brand: Rise Armament
Model: 5.56 NATO, .223 Rem, .300 BLK, .350 Legend Bolt Carrier Group
Caliber Compatibility: 5.56 NATO, .223 Rem, .300 BLK, .350 Legend
Bolt Head Material: 9310 Alloy Steel
Bolt Head Finish: Nickel Boron
Body Material: 8620 Alloy Steel
Body Finish: Nickel Boron
Gas System: Direct Impingement
Forward Assist Machining: Yes
Full Auto Compatible: Yes
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Warranty, Returns & Terms: MMC Armory offers a 30 day return, refund and exchange policy. You must email or call MMC Armory and obtain an RMA number prior to any return, refund, or exchange. All returns must include the original order number, receipt or invoice, along with the customers billing address, shipping address, contact phone numbers, contact emails, and RMA number. Returns, refunds, and exchanges may take up to two weeks, not including transit times, for processing after we have received return product. Return shipping costs will be the responsibility of the returning party, with the exception of the wrong item being received or on warranty exchange during the first 30 days after delivery. Items returned for warranty will only be replaced or exchanged, no refund given on warranty items.