AR-15 Parts
Shop our extensive inventory of AR-15 parts and modern sporting rifle (MSR) components. From fully assembled MIL-SPEC upper receivers and enhanced lower parts kits to free-float M-LOK handguards and ambidextrous controls, we carry the critical components required for duty, defense, and custom builds.
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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 stockOn Sale
Knights Armament - 7.62MM QDC Flash Suppressor Kit - 112954
Knights Armament Company
Now: $177.75Was: $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...Now: $177.75Was: $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 -
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 -
Knight Armament - 5.56 QDC 3-Prong Flash Suppressor Kit - 1/2"-28 TPI - 30555
Knights Armament Company
$129.96The Knight's Armament 5.56mm QDC 3-Prong Flash Suppressor Kit (KAC PN: 30555) is KAC's signature 3-prong flash eliminator for 5.56mm rifles with 1/2"-28 TPI muzzle threading. The KAC 3-Prong Flash...$129.96 -
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