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 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 -
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 is the standard-length M203 barrel configuration used...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 Carpenter steel and has been magnetic particle inspect to...$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 show evidence of such. Weight:0.566 lbs Caliber: ...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 weapon systems, and it is made of materials far...$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 weapon, it must operate flawlessly – even...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 system it belongs to has been selected by...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 existing LMT piston rifles. SPECS Caliber: 5...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 compared to a standard SOPMOD stock configuration — without...$560.50 -
Out of stock
LMT Defense - SOPMOD Buttstock - L7LA2BA
LMT Defense
MSRP: $228.00$211.50The LMT Defense SOPMOD Buttstock (L7LA2BA) is the preferred stock of USSOCOM (US Special Operations Command) soldiers — trusted by the world's most elite military units. This NSN-issued buttstock (NSN: 1005-99-288-7479) delivers the durability, comfort,...MSRP: $228.00$211.50 -
Out of stockOn Sale
LMT Defense - Full-Auto Ambidextrous Selector - LMP092AA
LMT Defense
Now: $57.87Was: $59.67LMT Defense Full-Auto Ambidextrous Selector. This no frills, tough as nails, ambi safety is a perfect low cost upgrade to your LMT or any other AR-15/AR-10 weapon system. This is a steel, two piece design with equal length levers for quick and...Now: $57.87Was: $59.67 -
LMT Defense - Semi-Auto Ambidextrous Selector - LMP092CAA
LMT Defense
$59.67The LMT Defense Semi-Auto Ambidextrous Selector (LMP092CAA) provides true ambidextrous safety/selector operation for AR-15 builds. This drop-in ambidextrous safety selector features levers on both the left and right sides of the lower receiver, enabling...$59.67