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
LMT Defense - 5.56 Enhanced Full-Auto Bolt Carrier Group - #R-L7Q3
LMT Defense
$553.50If LMT's standard bolt carrier group is the infantryman of the gun industry, then their enhanced BCG is the delta operator. This carrier group was designed to function effectively in full-auto,...$553.50 -
Out of stockOn Sale
LMT Defense - 5.56 Semi-Auto Bolt Carrier Group - L7A3
LMT Defense
Now: $242.10Was: $249.75The LMT 5.56 direct impingement bolt carrier group will fit in any mil-spec ar15 upper receiver and is made of high-quality materials with durability in mind. This bolt carrier features...Now: $242.10Was: $249.75 -
Out of stock
LMT Defense - 5.56mm M4/M16 20" AR15 Barrel Assembly - LMP10409
LMT Defense
$440.1020″ CHROME LINED 1:7″ TWIST M16/M4-STYLE 5.56 BARREL W/ A-FRAME FRONT SIGHT HOUSING. DOES NOT INCLUDE UPPER RECEIVER, FRONT SIGHT POST, SWIVEL, OR SLIP RING...$440.10 -
Out of stockOn Sale
LMT Defense - 5.56mm M4/M16 16" AR15 Barrel Assembly - LMP10405
LMT Defense
Now: $401.40Was: $424.80This is a Lewis Machine & Tool M4/M16 style 16-inch .223/5.56mm barrel assembly. It features 1/2x28 muzzle threads, a pinned flat-top height front sight gas block, carbine-length gas system,...Now: $401.40Was: $424.80 -
Out of stockOn Sale
LMT Defense - 5.56mm M4/M16 14.5" AR15 Barrel Assembly - LMP10406
LMT Defense
Now: $401.40Was: $428.40This is a Lewis Machine & Tool M4/M16 style 14.5-inch .223/5.56mm barrel assembly. It features 1/2x28 muzzle threads, a pinned flat-top height front sight gas block, carbine-length gas system,...Now: $401.40Was: $428.40 -
Out of stockOn Sale
LMT Defense - 5.56mm M4/M16 10.5" AR15 Barrel Assembly - LMP10408
LMT Defense
Now: $401.40Was: $451.80This is a Lewis Machine & Tool M4/M16 style 10.5-inch .223/5.56mm barrel assembly. It features 1/2x28 muzzle threads, a pinned flat-top height front sight gas block, delta-ring handguard retainer, GI...Now: $401.40Was: $451.80 -
LMT Defense - 12" Piston MRP 5.56mm Barrel Assembly - #R-L7MC1B
LMT Defense
$716.8512″ Piston Chrome Lined 5.56×45 (.223) 1:7″ RH twist barrel Designed for the LMT monolithic receiver, this barrel utilizes a piston operating rod and has an A2 birdcage for reduced flash. The barrel...$716.85 -
Out of stockOn Sale
LMT Defense - 5.56mm 16" Stainless Steel MRP Barrel Assembly - L7SB1S
LMT Defense
Now: $803.70Was: $893.0016″ Stainless Steel 5.56×45 (.223) 1:7.5″ RH 5R cut barrel Designed for the LMT monolithic receiver, this barrel utilizes a low profile gas block, mid length straight gas tube, and A2 birdcage for...Now: $803.70Was: $893.00 -
Out of stockOn Sale
LMT Defense - 5.56mm 20" Stainless Steel MRP Barrel Assembly - L7SD1S
LMT Defense
Now: $803.70Was: $893.00This is a new Lewis Machine & Tool 20-inch stainless-steel MRP barrel chambered for .223/5.56mm. It features a 1/2x28 threaded A2 birdcage flash hider, low profile gas block with a rifle-length...Now: $803.70Was: $893.00 -
Out of stockOn Sale
LMT Defense - 5.56mm 20" Chrome Lined MRP Barrel Assembly - L7RA1B
LMT Defense
Now: $538.20Was: $554.4020″ Chrome Lined 5.56×45 (.223) 1:7″ RH twist barrel Designed for the LMT monolithic receiver, this barrel utilizes a low profile gas block, rifle length straight gas tube, and A2 birdcage for...Now: $538.20Was: $554.40 -
Out of stockOn Sale
LMT Defense - 5.56mm 14.5" Chrome Lined MRP Barrel Assembly - L7NE1B
LMT Defense
Now: $538.20Was: $554.40This is a new Lewis Machine & Tool 14.5-inch MRP barrel chambered for .223/5.56mm. It features a 1/2x28 threaded A2 birdcage flash hider, low profile gas block with a mid-length straight gas tube,...Now: $538.20Was: $554.40 -
LMT Defense - 5.56mm 12.5" Chrome Lined MRP Barrel Assembly - L7MJ1B
LMT Defense
$554.40This is a new Lewis Machine & Tool 12.5-inch MRP barrel chambered for .223/5.56mm. It features a 1/2x28 threaded A2 birdcage flash hider, low profile gas block with a mid-length straight gas tube,...$554.40