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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Knight's Armament - 9 Rib Rail Panel - 97169
Knights Armament Company
$27.99The Knight's Armament 9-Rib Rail Panel (KAC PN: 97169) is KAC's extended 9-rib polymer rail panel for covering unused slots on KAC RAS Picatinny quad-rail handguards. The 9-rib panel covers a larger...$27.99 -
LMT Defense 5.56mm 16" Piston MRP Barrel Assembly
LMT Defense
$716.85The LMT Defense 5.56mm 16" Piston MRP Barrel Assembly (L7PC1B) is a 16-inch chrome lined 5.56×45 (.223) barrel featuring LMT's short-stroke piston operating system — the key upgrade for shooters who...$716.85 -
Out of stockOn Sale
LMT Lewis Machine & Tool DMR Buttstock
LMT Defense
Now: $391.50Was: $435.00LMT Lewis Machine & Tool DMR Buttstock Designated Marksman Rifle buttstock. Designed for .308 caliber rifles with carbine extension tubes. The DMR stock has comb height and length of pull adjustments...Now: $391.50Was: $435.00 -
Out of stockOn Sale
LMT Defense - .300 Blackout 16" Chrome Lined MRP Barrel Assembly - #L7BK1B
LMT Defense
MSRP: $598.00Now: $538.20Was: $554.40This is a new Lewis Machine & Tool 16-inch .300 Blackout MRP barrel assembly. It features a chrome lined bore with a 1:7 right hand twist. Designed for the LMT monolithic receiver, this barrel...MSRP: $598.00Now: $538.20Was: $554.40 -
LMT Defense - 5.56mm 16" Chrome Lined MRP Barrel Assembly - L7PA1B
LMT Defense
MSRP: $598.00$554.40The LMT Defense 16" Chrome Lined 5.56mm MRP Barrel Assembly (L7PA1B) is engineered specifically for LMT's Monolithic Rail Platform (MRP) upper receivers. This 16-inch, 5.56×45 (.223) barrel features...MSRP: $598.00$554.40 -
Out of stock
LMT Defense - 5.56mm 10.5" Chrome Lined MRP Barrel Assembly - L7MA1B
LMT Defense
$554.40The LMT Defense 10.5" Chrome Lined 5.56mm MRP Barrel Assembly (L7MA1B) is engineered specifically for LMT's Monolithic Rail Platform (MRP) upper receivers. This 10.5-inch, 5.56×45 (.223) barrel...$554.40 -
Out of stockOn Sale
LMT Defense - 6.8 SPC / .224 Valkyrie Enhanced AR15 Bolt - L7Q3C
LMT Defense
Now: $263.35Was: $289.00This is a new Lewis Machine & Tool 6.8 Special and .224 Valkyrie AR15 bolt. It features the same durable construction as LMT’s 5.56 Enhanced Bolt with an emphasis on reliability with use of...Now: $263.35Was: $289.00 -
McCollum Machine M203 37mm 12" Flare Launcher Barrel (fits Colt/LMT M203 receivers)
McCollum Machine
$529.00This 37mm barrel is compatible with 40mm M203 grenade launcher receivers and is intended to allow installation without requiring registration of the receiver as a Destructive Device under the NFA...$529.00 -
Out of stock
McCollum Machine M203 37mm 9" Flare Launcher Barrel (fits Colt/LMT M203 receivers)
McCollum Machine
$529.00This 37mm barrel is compatible with 40mm M203 grenade launcher receivers and is intended to allow installation without requiring registration of the receiver as a Destructive Device under the NFA...$529.00 -
KAC Knights Armament Company URX 4, 5.56 M-LOK 14.5" Forend Kit 32304-1450
Knights Armament Company
$373.91The KAC Knight's Armament URX 4, 5.56mm M-LOK 14.5" Forend Kit (KAC PN: 32304-1450) is KAC's premier free-float M-LOK handguard for AR-15/M4/SR-15 pattern rifles. The URX 4 is fully modular,...$373.91 -
Out of stock
Thunder Beast - CB Series .30 Cal Non Timed Muzzle Brake 5/8x24 30CB-NTB 5/8-24
Thunder Beast Arms Corp
$125.00The Thunder Beast Arms CB Series .30 Caliber Non-Timed Muzzle Brake with 5/8x24 threads (30CB-NTB 5/8-24) is the non-timed version of the CB muzzle brake host adapter for .30 caliber rifles. Unlike...$125.00 -
Out of stock
TBAC Thunder Beast Arms Corp SR Series .338 Cal Non-Timed Muzzle Break #338SR-NTB
Thunder Beast Arms Corp
$145.00This is a new Thunder Beast Arms Corporation TBAC 338 SR Non-Timed Muzzle Brake. The SR mount's dual-locking system acts as a backup retention mechanism, preventing suppressor detachment under all...$145.00