Shop AR Parts
Select a category below to view available products and options.
AR Parts
AR-15 and AR-10 Parts & Components
Shop AR parts for AR-15 and AR-10 builds, repairs and upgrades. Ballistic Barn carries an expanding selection of AR-15 parts and AR-10 parts, including upper parts, lower parts, barrels, handguards, upper receivers, bolt carrier groups, charging handles, muzzle devices, gas-system components, triggers, stocks, braces and buffer-system components. Browse by component type to find parts for your platform, caliber and configuration.
Read More About Our AR Parts & Components
Build. Repair. Upgrade. Configure.
AR Parts for AR-15 and AR-10 Platforms
Browse AR parts for small-frame AR-15 and large-frame AR configurations. From upper receivers and barrels to bolt carrier groups, handguards, charging handles, gas-system components and lower parts, Ballistic Barn carries components for repairs, upgrades and custom configurations.
AR-15 Parts and AR-10 Parts
The AR platform includes multiple receiver sizes and component patterns. While AR-15 and large-frame AR rifles share many design concepts, their parts should not be assumed to be interchangeable. Start by identifying the platform for your rifle, then select components according to the specifications of that platform and the individual product.
AR-15 Parts
AR-15 parts include upper and lower components for the small-frame AR platform across numerous calibers and configurations. Available parts include receivers, barrels, handguards, bolt carrier groups, charging handles, gas-system components, triggers, buffer-system parts and related accessories.
AR-10 Parts
AR-10 parts and other large-frame AR components are designed around larger receiver and cartridge families. Compatibility can vary among AR-10, LR-308, DPMS-pattern, SR-25-pattern and manufacturer-specific configurations, making individual product specifications especially important.
Shop AR Parts by Component
Use the parts directory below to browse the major component categories available from Ballistic Barn. Several of these categories include both AR-15 and compatible large-frame AR parts, so check the individual product listing for platform-specific information.
AR Upper Parts & Components
AR Upper Parts
Browse upper components and related parts.
AR Upper Receivers
Stripped and assembled receiver components.
AR Barrels
AR-15 and AR-10 barrels by caliber and configuration.
Handguards & Rails
Small-frame and compatible large-frame options.
Bolt Carrier Groups
Platform- and caliber-specific BCG options.
Charging Handles
Charging handles for compatible AR platforms.
Muzzle Devices
Brakes, flash hiders, compensators and related parts.
Gas Blocks
Fixed and adjustable gas-block options.
AR Lower Parts & Components
AR Lower Parts
Browse lower-receiver components and kits.
Buffer Tube Parts & Kits
Receiver extensions, buffers, springs and kits.
Lower Parts & Kits
Controls, pins, springs, detents and parts kits.
Stocks & Pistol Braces
Stock and brace options for compatible configurations.
Triggers
Trigger and fire-control options.
Choosing AR Parts by Component Type
AR Upper Receivers
The upper receiver forms the foundation of the upper assembly. Select a receiver intended for the appropriate AR-15 or large-frame platform and compatible component pattern.
AR Barrels
AR barrels vary by platform, caliber, length, profile, material, twist rate, gas-system specification and other product-specific characteristics.
Bolt Carrier Groups
Bolt carrier groups vary by platform and cartridge family. Check the individual BCG specifications for the intended platform and caliber.
Handguards & Rails
Handguard compatibility depends on the platform, receiver pattern and mounting system. Large-frame dimensions can differ among manufacturers and receiver patterns.
Charging Handles
Charging handles are available in different sizes and configurations. Confirm whether the product is intended for an AR-15 or compatible large-frame upper.
AR Lower Parts
Lower components include triggers, controls, springs, pins, buffer-system parts, stocks and other components. Compatibility varies according to receiver and platform.
AR-15 and AR-10 Parts Compatibility
AR-15 and AR-10 parts are not universally interchangeable. Components such as upper receivers, barrels, bolt carrier groups, charging handles, handguards and buffer-system parts can differ substantially between small-frame and large-frame platforms.
Large-frame AR compatibility requires additional attention because there is no single universal dimensional standard covering every AR-10 or 308-pattern rifle. DPMS-pattern, SR-25-pattern and other manufacturer-specific configurations can differ in receiver dimensions and related component requirements.
Verify Platform and Product Specifications
Before choosing an AR part, confirm that the component is intended for your platform and configuration. When compatibility is uncertain, compare the manufacturer's specifications or contact Ballistic Barn for help identifying the appropriate product.
Shop AR Parts at Ballistic Barn
Ballistic Barn carries AR parts for repairs, replacement, upgrades and custom configurations, with options for both AR-15 and compatible large-frame AR platforms. Our product listings provide platform and component specifications to help you compare available options before ordering.
AR-15 Parts
AR-10 & Large-Frame Parts
Based in Fredericksburg, Texas
Knowledgeable Customer Support
AR Parts FAQs
Does Ballistic Barn carry both AR-15 and AR-10 parts?
Yes. This AR parts category includes components for AR-15 rifles as well as compatible large-frame AR platforms. Individual product listings identify the applicable platform and other important specifications.
Are AR-15 and AR-10 parts interchangeable?
Not universally. Some components may be shared across platforms, while major parts such as upper receivers, barrels, bolt carrier groups, charging handles, handguards and buffer-system components can differ. Check the specifications for each product.
What types of AR parts does Ballistic Barn carry?
Available categories include upper receivers, barrels, handguards, bolt carrier groups, charging handles, muzzle devices, gas-system components, lower parts, buffer-system components, triggers, stocks, braces and related AR accessories.
Are all AR-10 parts interchangeable with LR-308 parts?
No. Large-frame AR components can vary by receiver pattern, manufacturer and product design. AR-10, LR-308, DPMS-pattern and other large-frame terminology should not be treated as proof that two components are interchangeable.
How do I know whether an AR part fits my platform?
Start with the platform identified in the product listing and compare the relevant manufacturer specifications for your existing components. Large-frame AR parts require particular attention because component dimensions can vary among receiver patterns and manufacturers.