Receivers & Frames
The foundation of your next custom build. Browse our selection of receivers and frames, including stripped lower receivers, forged/billet upper receivers, ambi controls, and serialized handgun frames to start your project legally and correctly.
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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 stock
Gemtech - Complete Upper Receiver 5.56NATO 16.1" - 13833
$839.00Introducing the new GVAC system from Gemtech. Significantly reduce the amount of gas blowback you'll experience wwhen shooting suppressed with its patented design. The re-imagined barrel profile,...$839.00 -
Out of stock
Colt - Complete Upper 223 Rem/556NATO 16" - LE6920EPR-CK
Colt
$1,049.00The durability, reliability and excellent build quality of Colt uppers will provide years of service you can count on. Chambered in 223Rem/5.56NATO featuring a 16" barrel and a MLOK free float...$1,049.00 -
LMT Defense - MWS .308 M-LOK Upper Receiver - 15.3" - LM308BML4A
LMT Defense
MSRP: $1,525.00$1,413.90The LMT Defense MWS .308 M-LOK Upper Receiver 15.3" (LM308BML4A) is LMT's extended large-caliber MRP-H monolithic upper receiver, offering an additional 3 inches of handguard length over the standard...MSRP: $1,525.00$1,413.90 -
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
Daniel Defense - DDM4V7 S 5.56 NATO Complete Upper Receiver - 23-128-00275-047
Daniel Defense
Now: $1,174.00Was: $1,263.00The Daniel Defense M4 V7 S Upper Receiver Group is built around a Cold Hammer Forged 11.5" Government profile barrel and equipped with a DD improved Flash Suppressor to reduce flash signature. It...Now: $1,174.00Was: $1,263.00 -
Out of stockOn Sale
Knights Armament - SR-25 PC Upper Receiver M-LOK - 16" - 111474
Knights Armament Company
Now: $4,114.69Was: $4,331.25The Knights Armament SR-25 Precision Carbine Upper Kit was built as a dual role 7.62 NATO Carbine. Every PC is equally adept at putting rounds on target at 1000 meters or raNow: $4,114.69Was: $4,331.25 -
Out of stockOn Sale
Knights Armament - SR-25 7.62 E2 M-LOK Upper Receiver - 14.5" - #111468
Knights Armament Company
Now: $4,114.69Was: $4,331.25The Knights Armament SR-25 14.5” Combat Carbine Upper kit is the latest evolution in the lightweight 7.62mm NATO Carbine platform. The 14.5” CC provides 7.62mm NATO performance in a package of...Now: $4,114.69Was: $4,331.25 -
Out of stockOn Sale
Knights Armament - Upper Receiver Kit SR-30 MOD 2 - 9.5" - 32310
Knights Armament Company
Now: $2,311.47Was: $2,433.12Knight's SR-30 E3 MOD 2 takes advantage of the .300 BLK, offering a 9.5" barrel for a significantly more transportable and maneuverable firearm. The QDC compatible Flash Hider will mount any of the...Now: $2,311.47Was: $2,433.12 -
Out of stockOn Sale
Knights Armament - Upper Receiver SR-15 MOD 2 URX 4 M-LOK 5.56 mm NATO 18" - 32309
Knights Armament Company
Now: $2,311.47Was: $2,433.12The SR-15 E3 Mod 2 5.56 mm NATO barrel is manufactured for military grade durability, and is free-floated inside a URX4 M-LOK handguard. An improved E3 round-lug boltNow: $2,311.47Was: $2,433.12 -
Out of stockOn Sale
Knights Armament - SR-15 Carbine Mod2 Complete Upper - 14.5 E3 Mod 2 - #31949
Knights Armament Company
Now: $2,088.62Was: $2,198.54The SR-15 E3 MOD 2 series’ 5.56mm NATO barrel is manufactured for military grade durability, and is free-floated inside a URX4 M-LOK handguard. An improved E3 round-lug bolt design both enhances...Now: $2,088.62Was: $2,198.54