AR15 Bolts
AR-15 bolts and bolt carrier groups are the heart of your rifle — they’re what actually cycles the action, strips a round from the magazine, chambers it, and resets for the next shot. If this part fails, your rifle fails. That’s why cutting corners here doesn’t make sense, whether you’re building a new rifle from scratch or replacing a worn component in a duty gun.
The BCGs and bolt assemblies listed here cover the calibers that matter most — 5.56 NATO, 9mm, and 224 Valkyrie among them. Brands like BCM, Aero Precision, Sons of Liberty Gun Works, Toolcraft, and Fail Zero are represented because they’ve earned their place through consistent quality, not marketing budgets. These are components that run.
Every item listed is verified in real time — live inventory means what you see as in stock is actually. Bolts, BCGs, and parts ship direct to your door with flat-rate shipping and no hidden fees tacked on at checkout. Most orders are out the door within one business day.
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American Built Arms Company’s 5.56 NATO bolt assembly features nickel boron plating that requires virtually no lubrication, paired with a manganese phosphate coated extractor for superior extraction performance. Made in USA.
$90.00Low Stock - AR15 Bolts Add to cart
Angstadt Arms AR 45 ACP Nitride Bolt Carrier Group feeds reliably from GLOCK magazines with a QPQ black nitride 8620 steel finish designed for AR-15 compatibility.
$162.00In Stock - AR15 Bolts Add to cart
Angstadt Arms Bolt Carrier Assembly machined from 8620 steel with QPQ black nitride finish, engineered for 9mm Luger AR-15 platforms with removable weight design for folding stock adapter compatibility.
$162.00In Stock - AR15 Bolts Add to cart
Battle Arms Development 556 Titanium Bolt Carrier Group delivers superior durability and reliability with titanium construction, built by the innovators behind the first fully modular, patented ambidextrous safety selector for AR-15s.
$473.00Low Stock 
Black Rain Ordnance Spec15 Bolt Carrier Group Black Nitride Accessory
Black Rain OrdnanceAdd to cartAR15 Bolts Add to cartBlack Rain Ordnance Spec15 Bolt & Carrier Group Black Nitride
$138.00In Stock- AR15 Bolts Add to cart
CMMG bolt assembly delivers precision-engineered durability and reliability for AR15 maintenance and upgrades. Consistent performance you can depend on over years of use.
$76.00In Stock - AR15 Bolts Add to cart
CMMG 55BA419 Bolt Carrier Group 5.56x45mm NATO Black Steel M16
$165.00In Stock - AR15 Bolts Add to cart
Fail Zero’s complete bolt carrier group is engineered for .224 Valkyrie with nickel boron coating and EXO treatment for enhanced durability and performance. Drop-in design installs directly into most MIL-SPEC uppers without modification.
$172.00In Stock - AR15 Bolts Add to cart
Fail Zero 6.8 SPC Bolt Carrier Group with EXO Nickel Boron coating delivers permanent dry lubricity and extreme durability. Fully assembled and ready to install in most Mil-Spec upper receivers.
$172.00In Stock - AR15 Bolts Add to cart
Fail Zero AR9 9mm Bolt Carrier Group features salt bath Nitride finish for superior wear resistance and easy cleaning, fully assembled and ready to install with no gunsmithing required.
$158.00Low Stock - AR15 Bolts Add to cart
Fail Zero Bolt Carrier Group for 5.56 NATO AR-15s features EXO Nickel Boron treatment for enhanced durability and reliability. Compatible with both 5.56 and .223 ammunition, this complete semi-auto BCG assembly drops into most MIL-SPEC AR-15 uppers.
$145.00Low Stock - AR15 Bolts Add to cart
Fail Zero Lightweight 5.56 NATO AR-15 Bolt Carrier Group delivers 21% weight reduction with EXO Nickel Boron finish and drop-in MIL-SPEC compatibility. Complete steel construction includes bolt, extractor, cam pin, carrier key, and firing pin for semi-auto operation.
$225.00Low Stock - AR15 Bolts Add to cart
Fail Zero M16/M4 5.56 NATO Full Auto Bolt Carrier Group delivers a complete, drop-in solution with EXO Nickel Boron treatment for MIL-SPEC M16/M4/AR15 uppers. Compatible with both 5.56 and .223 ammunition.
$158.00In Stock - AR15 Bolts Add to cart
Faxon 9310 bolt features salt bath nitride treatment for superior corrosion resistance and surface hardness, with MPI inspection and chamfered lugs for reliable AR-15 cycling.
$53.00In Stock - AR15 Bolts Add to cart
Faxon’s 6.5 Grendel Type 2 bolt exceeds MIL-SPEC with 9310 nitride steel construction, full MPI testing, and 45-degree lugs for superior reliability under extreme pressure.
$71.00In Stock - AR15 Bolts Add to cart
FosTech Outdoors complete bolt carrier group with standard full-auto M16 cut, engineered for Echo AR-II and Echo Sport platforms. 100% USA made from premium alloy steels with black nitride finish throughout.
$142.00In Stock - AR15 Bolts Add to cart
Luth-AR Bolt Carrier Group Component Kit includes extractor, extractor spring, gas rings, firing pin, and critical components for straightforward AR-15 service and upgrades. High-quality materials engineered for durability and reliability.
$28.19In Stock - AR15 Bolts Add to cart
Battle Arms Development’s Standard M16 Bolt Carrier Group delivers hard-use reliability from the innovators who pioneered the AR-15’s first fully modular, patented ambidextrous safety selector. Built for demanding applications with proven compatibility across the platform.
$156.00Low Stock - AR15 Bolts Add to cart
Phase 5 Bolt Carrier Group 5.56 NATO delivers Mil-Spec performance with a heat-treated, chrome-lined carrier and HPT/MPI tested bolt—drop-in ready with no modifications needed.
$150.00In Stock
