Upper Receiver
Find the exact complete or stripped AR-15 upper receiver for your next build. We stock forged and billet uppers, cold hammer-forged barrels, low-profile gas blocks, and advanced bolt carrier groups (BCGs) engineered for extreme reliability and sub-MOA accuracy.
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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 -
Out of stock
Knight's Armament - 4 Rib Rail Panel - Black - 97166
Knights Armament Company
$28.15The Knight's Armament 4-Rib Rail Panel — Black (KAC PN: 97166) is KAC's 4-rib polymer panel for covering unused Picatinny rail slots on KAC RAS and other quad-rail handguards. The 4-rib design covers...$28.15 -
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 stock
Knight's Armament - SR-25 URX 3.1 Forend Assembly 13.5" - 30259
Knights Armament Company
$515.84The KAC 7.62 URX 3.1 Rail is a free floating, fully modular replacement forend for the SR-25 platform. Unlike traditional quad rail designs, the URX 3.1 incorporates short sections of M1913 Picatinny...$515.84 -
Out of stockOn Sale
Knights Armament - SR-25 URX Wrench - 23383
Knights Armament Company
Now: $379.25Was: $399.22Knights Armament SR-25 URX wrench. This wrench is required when installing a URX rail system on an SR-25 rifle. ÂNow: $379.25Was: $399.22 -
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
Knight's Armament - M4/M5 RAS Hardware Kit - 30450
Knights Armament Company
Now: $33.17Was: $34.92The KAC Medium URX II free floating forend features an integral, flip-up front sight assembly that folds flush with the continuous top rail when not in use, creating a seamless look. Full length...Now: $33.17Was: $34.92 -
Out of stockOn Sale
Knights Armament - 7-Piece 7.62 Muzzle Device Shim Set - 30130
Knights Armament Company
Now: $34.62Was: $36.45Shim set for Knight's Armament 7.62mm rifles using 3/4"x24 muzzle devices. This 7-Piece Shim Set is for use in properly timing a flash hider or muzzle brake. Shims the muzzle device off of the end...Now: $34.62Was: $36.45 -
Out of stock
Knights Armament - 7.62MM QDC Flash Suppressor Kit - 112954
Knights Armament Company
$187.11The Knights Armament QDC Flash Suppressor is compatible with KAC's QDC suppressor and is threaded in 5/8x24. Note, this muzzle device will not fit the SR25. Weights 3.6oz and includes a shim kit and...$187.11 -
Out of stockOn Sale
Knights Armament - 762QDC Flash Hider 7.62 NATO - 1/2X28 - 111583
Knights Armament Company
Now: $123.44Was: $129.94Thread: 1/2"-28 compatible with Knight's Armament SR25 QDC suppressor.  Includes: Knight's Armament Company QDC Flash Suppressor and shim kit with Rocksett. 7.62 QDC Flash Suppressor...Now: $123.44Was: $129.94 -
Out of stockOn Sale
Knights Armament - QD FLASH HIDER - 1/2"-28 - #93048
Knights Armament Company
MSRP: $120.06Now: $114.06Was: $120.06The KAC M4QD Flash Hider is an effective flash suppressor that also serves as a platform for attaching a Knight&rsquoMSRP: $120.06Now: $114.06Was: $120.06 -
Knights Armament - Piston Assembly - USP Tactical M16x1 LH - 22500
Knights Armament Company
$774.00The Knight's Armament Piston Assembly — USP Tactical M16x1 LH (KAC PN: 22500) is KAC's replacement piston assembly for Heckler & Koch USP Tactical pistols with M16x1 left-hand thread suppressor...$774.00