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 stockOn Sale
LMT Defense M203 Quadrant sight, Rail Mounted
LMT Defense
Now: $387.90Was: $444.15LMT Defense Quadrant sight, mounts to a 1913 picatinny rail upper receiver.Now: $387.90Was: $444.15 -
Out of stockOn Sale
LMT Defense - M203 Leaf Sight Handguard Mounted - 8448330
LMT Defense
Now: $175.50Was: $180.90Leaf Sight for Standard M203 Grenade Launcher. Mounts directly to the standard handguard.Now: $175.50Was: $180.90 -
Out of stockOn Sale
LMT Defense M203 Rifle Length Mounting Kit
LMT Defense
Now: $440.10Was: $461.70LMT Defense M203 Mounting hardware kit with leaf sight assembly. Mounts to standard M203 for a standard A2 rifle with 20″ barrel.Now: $440.10Was: $461.70 -
Out of stockOn Sale
LMT Defense M203 Carbine length Mounting Kit
LMT Defense
Now: $342.00Was: $352.35The LMT M203 Carbine Length Mounting Kit mounts to a standard M203 for a standard or M4 type carbine. Includes M203 mounting hardware and leaf sight assembly.Now: $342.00Was: $352.35 -
Out of stock
LMT Defense - M203 BARREL 12” - LMP360
LMT Defense
MSRP: $598.00$554.40The LMT Defense M203 Barrel 12" (LMP360) is a 40mm grenade launcher barrel assembly for the M203 grenade launcher system. The 12-inch barrel provides increased velocity compared to the 9" barrel and...MSRP: $598.00$554.40 -
Out of stock
LMT Defense - Full-Auto 5.56 Bolt Carrier - L7D3A
LMT Defense
$224.55The Lewis Machine and Tool AR-15 bolt carrier is a full auto rated, M16 cut carrier designed for long term durability and reliability. The manganese phosphate carrier is machined out of 8620...$224.55 -
Out of stockOn Sale
LMT Defense - Semi-Auto 5.56 Bolt Carrier - L7A3A
LMT Defense
Now: $116.10Was: $119.70Standard semi auto carrier assembly - carrier only. Does not include the firing pin, cam pin, or firing pin retaining pin. As with all LMT bolts/carriers these are test fired at the factory and will...Now: $116.10Was: $119.70 -
LMT Defense - 5.56 Enhanced Bolt - L7Q3B
$404.55If our standard bolt is the infantryman of the gun industry, then our enhanced bolt is the delta operator. This bolt was designed to function effectively in full-auto, suppressed, and short barrel...$404.55 -
Out of stockOn Sale
LMT Defense - 5.56 Bolt - L7A3B
LMT Defense
Now: $145.80Was: $150.30LMT Complete Bolt features milspec phosphate finish, gas rings installed, and proper black extractor insert with Crane O-ring. Bolt is MPI and HP tested and marked “MP”. When you shoulder your...Now: $145.80Was: $150.30 -
Out of stockOn Sale
LMT Defense - .308 Semi-Auto Bolt Carrier Group - #LM308D
LMT Defense
Now: $558.00Was: $575.10The LMT Defense .308 BCG was designed with the same materials and principles as the 5.56 Enhanced Bolt Carrier Group. This bolt carrier group is exceptionally durable, and it’s no mystery why the...Now: $558.00Was: $575.10 -
Out of stock
LMT Defense - Full-Auto Piston 5.56 Bolt Carrier G2 - #R-L7Q3APE
LMT Defense
MSRP: $282.00$261.45Full auto piston bolt carrier. Developed for the Estonia Defense Forces, the new and improved design features a captive firing pin retainer similar to our .308 rifles. Drop in upgrade for all...MSRP: $282.00$261.45 -
LMT Defense - SOPMOD-Mini 5.56 Buttstock Kit - PDW-KIT
LMT Defense
$560.50The LMT Defense SOPMOD-Mini 5.56 PDW Buttstock Kit (PDW-KIT) is a complete Personal Defense Weapon conversion kit for any mil-spec AR-15. This kit reduces overall weapon length by 2.75 inches...$560.50