Rifle Bolts & Parts
Bolt Carrier Groups, often abbreviated as BCGs, are truly the heart and soul of semi-automatic rifles, including the much-admired AR-15. They take on the crucial tasks of loading, firing, and expelling cartridges, ensuring smooth operation. Each BCG is composed of several key components: the bolt, carrier, firing pin, cam pin, and retaining pin. At GRITR Sports, you'll be sure to find the best BCG as well as BCG parts.
At GRITR Sports, we're well aware of the significance of consistent and dependable performance in your AR-15. That's why our inventory includes a variety of top-notch AR-15 bolt carrier groups, brought to you by industry frontrunners like Aero Precision, CMMG, and more. Aero Precision BCGs are distinguished by their exceptional engineering and steadfast dependability - they assure smooth functioning and long-lasting service. CMMG, on the other hand, is celebrated for its pioneering designs that yield unmatched performance and robustness. Regardless of your requirements or budget, we have the ideal AR-15 BCG that will enhance your AR-15 and elevate your shooting experience. Our offerings encompass everything from standard 223/5.56 BCGs to the more unique 9mm and 6.5mm Grendel.
What does a BCG do in an AR-15?
In an AR-15, the BCG serves a critical function in the operation of the firearm. It moves within the upper receiver, loading a new cartridge into the chamber, firing the cartridge, extracting the spent casing, and ejecting it out of the firearm.
What is the difference between a semi-auto and a full-auto BCG?
The main difference lies in their design. A full-auto BCG has more mass towards the rear of the carrier, which allows it to interact with an auto sear in a fully automatic rifle. Semi-auto BCGs lack this extra mass. However, both semi-auto and full-auto BCGs can be used legally in semi-automatic rifles.
What's the best AR-15 BCG?
The best AR-15 BCGs include Aero Precision Nickel Boron BCG, Colt Mil-Spec BCG, Bravo Company BCM BCG, and Palmetto State Armory Mil-Spec Phosphate BCG.