Lower Receivers
Build or upgrade your custom rifle with our selection of lower receivers at Boss Firearms. Explore stripped lowers, complete lower receiver assemblies, and tactical firearm parts from top manufacturers.
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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...$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...$65.00 -
On Sale
Aero Precision - M16A4 Clone Lower Receiver - #APAR148017C
Aero Precision
Now: $129.99Was: $135.00Our M16A4 Clone Lower Receiver features custom engraving on our AR15 Gen 2 Lower Receiver and is the perfect base for your M16A4 clone build. These lowers do not have engraving on the right side of...Now: $129.99Was: $135.00Qty in Cart: 0Quantity:Price:Now: $129.99Was: $135.00Subtotal: -
Out of stockOn Sale
Sons of Liberty Gun Works - 5.56NATO Stripped Lower Receiver - #LOYAL9
Sons of Liberty Gunworks
Now: $137.75Was: $145.00The Sons of Liberty Gun Works (SOLGW) M4 Milspec Stripped Lower—meticulously engineered and crafted with precision—features the distinct Loyal 9 logo and Safe-Semi-Auto Selector markings. Forged from...Now: $137.75Was: $145.00 -
Out of stock
Sons of Liberty Gun Works - Complete M4 Lower Receiver - .223/5.56 NATO - #M4LOWERLFTA5BRAVO
Sons of Liberty Gunworks
MSRP: $550.00$522.50Sons of Liberty Gun Works believes in Quality Mil-Spec or better parts. They believe there is no substitute for quality and that your gun should be built right the first time, ready for hard use...MSRP: $550.00$522.50 -
Out of stock
Sons of Liberty Gun Works - Mil-Speclower 223REM/556NATOComplete Lower Receiver #MIL-SPECLOWER
Sons of Liberty Gunworks
$450.00The Sons of Liberty Gun Works MIL-SPEC Complete Lower Receiver exemplifies a commitment to quality Mil-Spec or better parts. Built to be reliable and ready for hard use straight out of the box, this...$450.00 -
Out of stockOn Sale
Sons of Liberty Gun Works AR-15 "Stripes" Lower Receiver #STRIPES
Sons of Liberty Gunworks
Now: $137.75Was: $145.00In 1767, the Sons of Liberty adopted a flag called the Rebellious Stripes with nine uneven vertical stripes (five red and four white). That Flag is the inspiration for SOLGW Rebellious Stripes...Now: $137.75Was: $145.00 -
Out of stockOn Sale
Sons of Liberty Gun Works - AR-15 billet Ambi Lower Receiver - #FCD-AMBI-LR
Sons of Liberty Gunworks
Now: $312.50Was: $330.00This lower receiver was jointly designed with Forward Controls Design, and pairs perfectly with a number of their enhanced control parts. Billet 7075-TG Receiver Flared Magazine Well Raised...Now: $312.50Was: $330.00 -
Out of stockOn Sale
BCM - Semi-Auto Complete AR Lower Receiver 223 Rem/556 NATO - LRG-STK-MOD-0-BLK
BCM
Now: $395.00Was: $475.00BCM semi automatic complete AR-15 lower receiver. This features an anodized black finish, BCM gunfighter stock, safe/semi fire controls, BCM gunfighter enhanced trigger guard, BCM gunfighter QD end...Now: $395.00Was: $475.00 -
Out of stockOn Sale
BCM - Semi-auto Complete Lower Receiver 223REM/556NATO - LRG-STK-MOD-0-SPMD-FDE
BCM
Now: $395.00Was: $475.00Exacting construction and rigorous durability are the standard for every weapon system that comes off the line at BCM. BCM Professional Grade Weaponry are hard use tools, built to perform in combat...Now: $395.00Was: $475.00 -
Out of stockOn Sale
Knights Armament - SR-25 Lower Receiver Assembly 7.62 NATO - No stock - #116858
Knights Armament Company
Now: $1,604.73Was: $1,689.19Built to the same standards as the complete SR-25 rifles, this lower receiver assembly features ambidextrous bolt, selector, and magazine releases, providing left-handed users with the advantages of...Now: $1,604.73Was: $1,689.19 -
Out of stockOn Sale
Knights Armament - SR-30 Lower Receiver Semi-Auto .300 Blackout - #31742
Knights Armament Company
Now: $1,007.82Was: $1,060.29Â The Knight's Armament SR-30 IWS Complete Lower Receiver comes with with a SopMod stock and ambidextrous controls. ÂNow: $1,007.82Was: $1,060.29