Everyone is a Range Safety Officer, if it seems unsafe call it for a cease fire! Even though the Carpenter 158 steel may seem like the best option, the 8620 steel will be strong enough for regular shooting. The BCG has 8620 steel on the carrier, 9310 steel on the bolt, and 4140 on the pin. I've done various tests on my own with NiB BCGs vs. phosphate. For the traditionalist, a phosphate BCG has a texture that just feels right. A full-auto BCG is a little longer and heftier and includes an extra lug at the back. Don't let yourself or another fall to suicide. Created with Sketch. With the weight of your AR-15, brace, and sight, you may start to really feel the heaviness of your firearm. Choosing the best AR-15 BCG will allow you to shoot fast rounds and feel less recoil, so why not start looking today? There are benefits to the NiB, NiB-X, Nitride and DLC BCGs; and in ways they ARE superior to a regular ol mag phos BCG. It has the lowest strength at 640 MPa tensile strength and 360 MPa yield strength. You want to make sure you are investing in a top-of-the-line product. •Nitride does not affect the physical dimensions of the steel so it is preferred to chrome lining when seeking out accuracy. You don’t need to replace a bolt carrier group very often since those that have high-quality material generally last for decades or at least 20,000 rounds. 3. Even though the bolt carrier group is a relatively small part of your AR-15, this device’s quality is vital to smooth, rapid shots. This rear lug on a full-auto M16 or M4A1 pushes the sear release downwards allowing full-auto fire. Bolt. Phosphate vs Nitride finish; If this is your first visit, be sure to check out the FAQ by clicking the link above. Nitride vs Phosphate BCG. The nitride comes from a case-hardening treatment that protects the material from water, wear, and corrosion. While you can use both the M16 and AR-15 BCGs in an AR-15, they do not have the same design. Many avid shooters do not believe that Brownells makes the carriers, and they have dug deep to find out who the true manufacturers are. REDDIT and the ALIEN Logo are registered trademarks of reddit inc. π Rendered by PID 21610 on r2-app-05f40328e89855c94 at 2021-01-09 04:01:00.479732+00:00 running d8cca48 country code: US. Suicide is a serious problem all around the world. Specifications: 158 Carpenter Steel Bolt; 8620 Steel Carrier The components of the bolt carrier group are top of the line. Toolcraft 5.56 / 223 Chrome Phosphate Bolt Carrier Group is a Full-Auto M16 BCG, manufactured using the finest U.S sourced raw materials available. I strongly suspect that other items will fail before the BCG, thus proving nothing. Toggle menu. Twist the cam pin 90 degrees and pull it out. Melonite and nitride are the same thing and better than phosphate. Generally speaking, yes, AR-15 bolt carriers are interchangeable. The recent customers do not have a single negative thing to say about this bolt carrier group. If you have a high budget and are looking to buy an exceptional bolt carrier group, the Lantac BCG should be at the top of your list. Nickel Boron VS. Black Nitride BCG. Simply put, full-auto BCGs are legal, but they don’t turn your AR-15 into a fully automatic weapon. This design, combined with an advanced UCT EXO, gives the bolt carrier group increased lubricity so you can have the smoothest shots. First, phosphate coating typically increases friction among bolt carrier groups. It's not going to make your AR an absolute death stick by itself but it is undeniably a better way to protect a part. Nitride metal treatment is very smooth, corrosion resistant and much easier to clean than the old phosphate finish. You can use it with an MP5 lower receiver, M16, and a JP Enterprises buffer system. The word “group” is in its name because there are eight main parts of the BCG: All these pieces work together to harness hot gasses produced from a firing round and use them to rapidly propel a new round. Purchasing a bolt carrier group is not a small investment. To top all that off, you get a lifetime warranty with the purchase. Both the nitride and phosphate BCGs provide durability but in different ways. They also shot-peened the bolt to make the material long-lasting. The buffer spring bounces back and sends the BCG to the upper receiver. Both of these finishes are great options. Still, most buyers were amazing with the finish, reliability, and craftsmanship of the BCG. The bolt helps guide the round into the chamber, extracts the spent case, then ejects the spent cartridge once you’ve fired the gun. Phosphate by itself isn't enough to protect the BCG from rust. Each bolt carrier group is unique, with its one style of finish and craftsmanship. For most applications, phosphate coated bolt carrier groups are a good choice. Nevertheless, most of the other customers (veterans included) were impressed with the lasting quality and stellar performance. Place the cam pin in the exposed hole, connecting the carrier and the extractor. Rating - 100%. Dec 21, 2014 #1/21 Both can be had for the same price right now. It's used a lot on gears and mechanical moving parts in other industries. The Prepper Insider is reader-supported. Customers complained about the BCG is correct for early 1960 's model M16 variants pre-1967. Special benefits, and many people are still debating who the true is... Complete without a high-grade nickel boron coating and a shrouded firing pin falls out 's. And durability, even though black nitride and material quality only is it for. Lining when seeking out accuracy the quality with magnetic particle inspection to ensure the! A lifetime warranty, while its yield strength wide variety of calibers and of! 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