AR-15 Parts
Shop our extensive inventory of AR-15 parts and modern sporting rifle (MSR) components. From fully assembled MIL-SPEC upper receivers and enhanced lower parts kits to free-float M-LOK handguards and ambidextrous controls, we carry the critical components required for duty, defense, and custom builds.
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Out of stock
Proof Research Carbon Fiber AR 15 Barrel 6mm ARC 18" 128671
Proof Research
$999.00Engineered for shooters who demand precision without the weight penalty, this 18" PROOF Research barrel pairs a 1:7.5 twist rate with a rifle-length gas system for smooth, reliable cycling across a...$999.00 -
J P Enterprises AR15 6.5 Grendel/ 6mm ARC Complete Bolt Assembly JPBC-EB6.5G
JP Enterprises
$155.75The JP Enterprises AR-15 6.5 Grendel / 6mm ARC Complete Bolt Assembly Enhanced (JPBC-EB6.5G) is a precision-machined, enhanced bolt assembly built from SAE 9310 nickel-chromium-molybdenum steel — the...$155.75 -
Out of stock
KAC Knight's Armament SR-15 URX-6 Notched Handguard, 10.5" 122025
Knights Armament Company
$287.28The KAC Knight's Armament SR-15 URX-6 Notched Handguard 10.5" (KAC PN: 122025) is KAC's latest generation URX-6 free-float handguard designed for the SR-15 platform in a 10.5" length for CQB and SBR...$287.28 -
Proof Research 16" Carbon Fiber 223 Wylde Barrel 1:8- 5/8-24 143254
Proof Research
$1,149.00The PROOF Research carbon fiber barrel cuts weight from an AR-15 without giving up accuracy. It is a 16" barrel with a .223 Wylde chamber, so it shoots both .223 Remington and 5.56 NATO, and a 1:8...$1,149.00 -
KAC Knights Armament SR-15 Stripped Ambi Lower Factory Blem 123689
Knights Armament Company
$749.00The KAC Knight's Armament SR-15 Stripped Ambidextrous Lower Receiver — Factory Blem (KAC PN: 123689) is a genuine Knight's Armament SR-15 ambidextrous stripped lower receiver, offered as a factory...$749.00 -
Out of stock
VLTOR MUR-1A Modular Upper Receiver-KG Gun-Kote MUR-1A-KG-B
Vltor Weapon Systems
$242.96The VLTOR MUR-1A Modular Upper Receiver with KG Gun-Kote finish (MUR-1A-KG-B) provides the precision 7075 T6 aluminum MUR-1A upper receiver with a premium Cerakote/KG Gun-Kote finish for enhanced...$242.96 -
Out of stock
LMT Defense MRP-L MLOK 10.5" Complete Upper Receiver Bundle LMTMLOKS10.5AS
LMT Defense
$1,625.00The LMT Defense MRP-L M-LOK 10.5" AR-15 Complete Upper Receiver Bundle (LMTMLOKS10.5AS) is a factory-complete LMT upper receiver assembly for AR-15/SBR builds, combining LMT's 9.25" M-LOK monolithic...$1,625.00 -
Out of stock
LMT Defense MRP-L Quad Rail 10.5" Complete Upper Receiver Bundle #LMTQuadS10.5AS
LMT Defense
$1,625.00LMT Defense - MRP-L Quad Rail 9.25" AR15 Upper Receiver - #L7S1A The patented LMT monolithic rail platform (MRP) upper receiver, has a receiver and handguard that are made from a single piece of...$1,625.00 -
LMT Defense MRP-L Quad Rail 13.25" AR15 Complete Upper Receiver LMTQuadL16AS
LMT Defense
$1,700.00*Discounts do not apply* The LMT Defense MRP-L Quad Rail 13.25" AR-15 Complete Upper Receiver (LMTQuadL16AS) is a factory-complete LMT upper receiver assembly — including the 13.25" quad rail...$1,700.00 -
Out of stock
LMT Defense MRP-L MLOK 16" Complete Upper Receiver Bundle #LMTMLOKL16AS
LMT Defense
$1,700.00MRP-L MLOK 13.25" AR15 Upper Receiver - #L7Y1A The patented LMT monolithic rail platform (MRP) upper receiver, has a receiver and handguard that are made from a single piece of aerospace grade...$1,700.00 -
Proof Research 338ARC 16" Carbon Fiber .338 ARC Barrel 145609
Proof Research
$1,149.00The Proof Research .338 ARC 16" Carbon Fiber Barrel (145609) is one of the first precision carbon fiber barrels available for the .338 ARC (Advanced Rifle Cartridge) — a powerful, medium-bore...$1,149.00 -
San Tan Tactical Lower Parts Kit STT-LPK
San Tan Tactical
$40.00The San Tan Tactical lower parts kit has the small parts you need to finish an AR-15 lower receiver, except the fire control group and pistol grip, so you can pick the trigger and grip you prefer...$40.00