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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LMT Defense - 350 Legend 16" Stainless Steel Barrel Assembly - L7KA1S
LMT Defense
$627.00The LMT Defense 16" Stainless Steel 350 Legend MRP-L Barrel Assembly (L7KA1S) brings LMT's renowned Monolithic Rail Platform modularity to the .350 Legend cartridge — America's most popular straight-wall hunting cartridge. LMT designed this barrel...$627.00 -
Out of stock
LMT Defense - QD Endplate - #L7A2DERRR
LMT Defense
MSRP: $42.10$39.06LMT® manufactured receiver endplate with QD swivel insertion point. Featuring a low profile, slim design, the L7A2DERRR is a great upgrade on your current rifle or a great addition to your next build. This end plate is now standard equipment all MARS...MSRP: $42.10$39.06 -
LMT Defense - 5.56 NATO 16" Stainless Steel Barrel Assembly - L7SB1B
LMT Defense
MSRP: $893.00$828.00The LMT Defense 16" Stainless Steel 5.56 NATO MRP-L Barrel Assembly (L7SB1B) is a premium match-quality barrel designed for LMT's MRP-L Monolithic Rail Platform upper receivers. Machined from stainless steel with a precision 5R rifling cut at a 1:7"...MSRP: $893.00$828.00 -
Out of stockOn Sale
LMT Defense - 5.56 NATO 20" Stainless Steel Barrel Assembly - #L7SD1B
LMT Defense
MSRP: $893.00Now: $803.70Was: $828.00Specs: Caliber: 5.56 NATO Barrel Length: 20" Barrel Material: Stainless Steel (SS) Rifling Twist Rate: 1:7"MSRP: $893.00Now: $803.70Was: $828.00 -
Forward Controls Design - Adjustable Turret Cap, Aimpoint Micro T1/T2 - ATA
Forward Controls Design, Inc
MSRP: $50.00$47.50The Forward Controls Design Adjustable Turret Cap for Aimpoint Micro T1/T2 (ATA) is FCD's precision-machined replacement turret cap for Aimpoint Micro T-1 and T-2 red dot sights. The ATA (Adjustable Turret Cap, Forward Controls) replaces the factory...MSRP: $50.00$47.50 -
Forward Controls Design - Heavy Rail Mounted Fixed Loop Sling Adapter - RSF-H
Forward Controls Design, Inc
MSRP: $68.00$64.60The Forward Controls Design Heavy Rail Mounted Fixed Loop Sling Adapter (RSF-H) is FCD's billet steel, heavy-duty fixed loop sling adapter that mounts directly to any MIL-STD-1913 Picatinny rail section. The RSF-H (Rail Sling, Fixed loop, Heavy, Forward...MSRP: $68.00$64.60 -
Forward Controls Design - Sling Adapter End Plate - ESF-H Black DLC
Forward Controls Design, Inc
MSRP: $66.00$62.70The Forward Controls Design Sling Adapter End Plate — Black DLC (ESF-H Black DLC) is FCD's enhanced QD sling socket end plate for AR-15/M16 carbine lower receivers, finished in Diamond-Like Carbon (DLC) coating for maximum hardness, corrosion resistance,...MSRP: $66.00$62.70 -
Proof Research - 6.5 Creedmoor 16" Carbon Fiber Barrel - 123515
Proof Research
$1,250.00The Proof Research 6.5 Creedmoor 16" Carbon Fiber Barrel (123515) brings the legendary accuracy and lightweight advantages of Proof Research carbon fiber technology to a compact 6.5 Creedmoor AR-type configuration. The 16-inch length is ideal for an...$1,250.00 -
Out of stock
Thunder Beast - BA Series .338 Muzzle Brake - 5/8x24 #338BA-BRK:5/8-24
Thunder Beast Arms Corp
$145.00Thunder Beast Arms Corp BA Muzzle Brake .338 CAL 5/8x24$145.00 -
Out of stock
Thunder Beast - BA Series .338 Muzzle Brake - 3/4x24 #338BA-BRK:3/4-24
Thunder Beast Arms Corp
$145.00Thunder Beast Arms Corp BA Muzzle Brake .338 CAL 3/4x24$145.00 -
Out of stock
Thunder Beast - SR Muzzle Brake - 3/4x24 #SR-BRK:3/4-24
Thunder Beast Arms Corp
$145.00Thunder Beast Arms Corp SR Muzzle Brake 3/4x24$145.00 -
Thunder Beast - CB Series .223 CAL Muzzle Brake - 1/2X28 223CB-BRK:1/2X28
Thunder Beast Arms Corp
$125.00The Thunder Beast Arms CB Series .223 Caliber Muzzle Brake with 1/2x28 threads (223CB-BRK:1/2X28) delivers effective muzzle rise and recoil reduction for .223/5.56 NATO AR-15s and bolt-action rifles while doubling as the CB (Collet Brake) quick-detach...$125.00