Lower & Upper Receivers
Build your AR-15, AR-10, or precision long-range rifle exactly how you want it. Shop our high-quality stripped and complete lower and upper receivers, matched receiver sets, and enhanced buffer systems.
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Daniel Defense .223REM/5.56NATO Lower Receiver Parts Kit - 05-013-21007
Daniel Defense
MSRP: $127.00$122.00The Daniel Defense Lower Parts Kit, Semi-Auto is for those interested in assembling their own AR15. Although there are many manufacturers of so-called MIL-SPEC parts, we have gone to great lengths to ensure the parts we provide are of the...MSRP: $127.00$122.00 -
LMT Defense - MARS-L Stripped AR15 Lower Receiver - R-M7SL
LMT Defense
MSRP: $380.00$352.35The LMT Defense MARS-L Stripped AR15 Lower Receiver (R-M7SL) is the foundation of the legendary LMT MARS® system. The LMT® Modular Ambidextrous Rifle System (MARS®) lower receiver sets a new standard for ambidextrous AR-15 controls. The MARS-L features...MSRP: $380.00$352.35 -
LMT Defense - MRP-L Quad Rail 13.25" AR15 Upper Receiver - L7RA1A
LMT Defense
$940.50The LMT Defense MRP-L Quad Rail (Picatinny) 13.25" AR15 Upper Receiver (L7RA1A) features the patented LMT Monolithic Rail Platform (MRP™) — the upper receiver and handguard are machined from a single piece of forged aerospace-grade aluminum, eliminating...$940.50 -
LMT Defense - MRP-L Quad Rail 9.25" AR15 Upper Receiver - L7S1A
LMT Defense
$890.10The LMT Defense MRP-L Quad Rail (Picatinny) 9.25" AR15 Upper Receiver (L7S1A) features the patented LMT Monolithic Rail Platform (MRP™) — the upper receiver and handguard are machined from a single piece of forged aerospace-grade aluminum, eliminating...$890.10 -
LMT Defense - MRP-L MLOK 13.25" AR15 Upper Receiver - L7Y1A
LMT Defense
$940.50The LMT Defense MRP-L M-LOK 13.25" AR15 Upper Receiver (L7Y1A) features the patented LMT Monolithic Rail Platform (MRP™) — the upper receiver and handguard are machined from a single piece of forged aerospace-grade aluminum, eliminating flex and...$940.50 -
LMT Defense - MRP-L MLOK 11.5" Specwar - AR15 Upper Receiver - L7Z1A
LMT Defense
$940.50The LMT Defense MRP-L M-LOK 11.5" AR15 Upper Receiver (L7Z1A) features the patented LMT Monolithic Rail Platform (MRP™) — the upper receiver and handguard are machined from a single piece of forged aerospace-grade aluminum, eliminating flex and providing...$940.50 -
LMT Defense Pistol Lower MIDMLK125-MARS-LOWER
LMT Defense
$899.00Pistol Lower from Exclusive 12.5" MARS-L Specwar Pistol MIDMLK125-MARSP The LMT Defense Pistol Lower is the full-featured configuration lower. The LMT® Modular Ambidextrous Rifle System (MARS®) lower receiver features a fully ambidextrous...$899.00 -
Knights Armament Company 7.62MM SR-25A2 20" Upper Receiver Kit 121471
Knights Armament Company
$3,283.20The Knights Armament SR-25A2 20" Upper Receiver Kit brings genuine military heritage to the civilian AR-10 platform. As the commercial counterpart to the M110A2 — the U.S. military's semi-automatic sniper system — this upper receiver kit is...$3,283.20 -
LMT Defense MRP-L M-LOK 9.25" "Grenadier" Upper Receiver L7SXG1A
LMT Defense
$940.50The LMT Defense MRP-L M-LOK 9.25" "Grenadier" Upper Receiver (L7SXG1A) is LMT's newest 2026 MRP-L upper receiver, purpose-designed for under-barrel launcher integration and versatile accessory mounting. The "Grenadier" name comes from the full-length...$940.50 -
LMT Defense MRP-L M-LOK 9.25" "Hybrid" Upper Receiver L7SX1A
LMT Defense
$940.50The LMT Defense MRP-L M-LOK 9.25" "Hybrid" Upper Receiver (L7SX1A) is LMT's newest 2026 addition to their Monolithic Rail Platform lineup — a versatile carbine-length upper designed for both piston and direct impingement operation. The "Hybrid"...$940.50 -
Ruger 10/22 Stripped Aluminum Receiver VCSCU-0130
Ruger
$65.00This is a new Ruger factor stripped aluminum receiver compatible with 10/22 pattern firearms. Black Stripped Made in the USA Note: These are stripped receivers so they will not come with any internal components. Being a serialized item, an...$65.00 -
Ruger - 10/22 Stripped Aluminum Receiver - SCU-0129
Ruger
$65.00This is a new Ruger factor stripped aluminum receiver compatible with 10/22 pattern firearms. Black Stripped Made in the USA Note: These are stripped receivers so they will not come with any internal components. Being a serialized item, an...$65.00