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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LMT Defense - Flat Top Upper Receiver - L7D1A
LMT Defense
$211.50The LMT Defense Flat Top Upper Receiver (L7D1A) is a mil-spec AR-15 flat top upper receiver machined from forged 7075-T6 aluminum with a Type III hard anodized finish. Featuring a standard flat top...$211.50 -
LMT Defense - MRP-L MLOK 12.5" Specwar Complete Upper Receiver Bundle - #BFCLMTSPEC
LMT Defense
MSRP: $1,989.00$1,799.99*Discounts do not apply* LMT Defense - MRP-L MLOK 11.5" Specwar - AR15 Upper Receiver - #L7Z1A The patented LMT monolithic rail platform (MRP) upper receiver, has a receiver and handguard that are...MSRP: $1,989.00$1,799.99 -
Colt - Upper Receiver 223REM/556NATO - SP63528
Colt
$179.99The durability, reliability and excellent build quality of Colt uppers will provide years of service you can count on. M4 Feed Ramps Forward Assist Upper Receiver$179.99 -
LWRC - Enhanced Lower Receiver - Black - ICEL5B
LWRC
$699.99LWRC M6 IC Enhanced Lower Receiver is fully ambidextrous, with a safety selector, mag release and bolt stop. These are semi auto receivers are stamped with 5.56 full auto markings.The LWRC M6 IC...$699.99 -
LMT Defense - AR10 Lower MARS-H Complete - LM308AM Code "LMT20" at Checkout for 20% Off
LMT Defense
MSRP: $1,470.00$1,363.50Use Code "LMT20" at Checkout to Save 20%Â The LMT Defense MARS-H SOPMOD Complete AR10 Lower Receiver (LM308AM) brings LMT's award-winning Modular Ambidextrous Rifle System to the large-frame .308/7...MSRP: $1,470.00$1,363.50 -
Sons of Liberty Gun Works - M76 9.5" M-LOK Wedge Lock Rail - M76-9.5
Sons of Liberty Gunworks
$315.00This is a new Sons of Liberty Gunworks M76 9.5-inch wedge lock rail compatible with AR-15 pattern firearms. It features aluminum construction, top mounted picatinny rail, 4140 Steel barrel nut, QD...$315.00 -
Sons of Liberty Gunworks - M76 15" M-LOK Wedge Lock Rail - M76-15
Sons of Liberty Gunworks
$345.00This is a new Sons of Liberty Gunworks M76 15-inch wedge lock rail compatible with AR-15 pattern firearms. It features aluminum construction, top mounted picatinny rail, and M-LOK rails for...$345.00 -
LMT Defense - Complete MARS-L SOPMOD Lower Receiver - M7DA4
LMT Defense
$969.30The LMT Defense Complete MARS-L SOPMOD Lower Receiver (M7DA4) is the full-featured SOPMOD-configuration MARS-L complete lower receiver. The LMT® Modular Ambidextrous Rifle System (MARS®) lower...$969.30 -
LMT Defense - Rail Mounted M203 Receiver - L2B1
LMT Defense
$1,616.40The LMT Defense Rail Mounted M203 Receiver (L2B1) is a 40mm grenade launcher receiver engineered for mounting to any standard 1913 Picatinny rail. Unlike the classic barrel-mounted M203, the L2B1...$1,616.40 -
LMT Defense - Classic M203 Receiver - LMP300E
LMT Defense
MSRP: $1,525.00$1,413.90The LMT Defense Classic M203 Receiver (LMP300E) is a mil-spec 40mm under-barrel grenade launcher receiver designed for M16/M4 platform rifles. This Type 1 barrel-mounted receiver accepts standard...MSRP: $1,525.00$1,413.90 -
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...MSRP: $127.00$122.00 -
LMT Defense - MARS-H DMR MWS Lower Receiver AR10 - #LM308AMD
LMT Defense
MSRP: $1,525.00$1,413.90The MARS-H brings the innovative design of our MARS-L to the MWS® platform. The LMT® Modular Ambidextrous Rifle System (MARS®) lower receiver offers ambidextrous controls to include: selector,...MSRP: $1,525.00$1,413.90