Parts & Accessories
Shop AR-15 and AR-10 parts and accessories from Boss Firearms. Our parts inventory includes LMT upper and lower receivers, Proof Research carbon fiber barrels, Forward Controls Design components, Geissele triggers, Magpul furniture, BCM parts, SureFire lights, and much more. Whether you're building a new rifle or upgrading your current setup, we carry the hard-to-find components trusted by military, law enforcement, and serious civilian shooters.
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Out of stockOn Sale
Magpul - PMAG 5.45x39mm 30rd. AK74 Magazine - MAG673-BLK
Magpul Industries
Now: $15.15Was: $15.95The PMAG 30 AK74 MOE is an inexpensive, lightweight, high reliability 30-round polymer magazine designed for Kalashnikov pattern rifles in 5.45x39mm (AK74, MPi-AK-74N, PA md. 86, and others.) It features a removable floorplate, constant curve geometry,...Now: $15.15Was: $15.95 -
Out of stock
Radian - Raptor-SL Ambidextrous AR15 Charging Handle - R0176
Radian Weapons
$104.95Based on the proven Raptor Ambidextrous Charging Handle, the Raptor-SL features slim-line handles for customers who require an ultra low-profile, anti-snag design. From rapid palm blading or finger thumb charges of the weapon, the motion is fluid and...$104.95 -
Out of stock
LMT Defense - 5.56 Full Auto Bolt Carrier Group With Enhanced Bolt - L7FB3
LMT Defense
MSRP: $630.00$489.60This bolt carrier group features the LMT Defense standard bolt carrier, cam pin, and firing pin, with the addition of the enhanced bolt. Bolt features: Built from a proprietary material that is not only stronger than the standard bolt but easier to...MSRP: $630.00$489.60 -
Out of stock
LMT Defense - 5.56mm M4/M16 20" AR15 Barrel Assembly - LMP10409
LMT Defense
$440.1020″ CHROME LINED 1:7″ TWIST M16/M4-STYLE 5.56 BARREL W/ A-FRAME FRONT SIGHT HOUSING. DOES NOT INCLUDE UPPER RECEIVER, FRONT SIGHT POST, SWIVEL, OR SLIP RING ASSEMBLY Specifications Manufacturer: LMT Defense Model: M4/M16...$440.10 -
Out of stockOn Sale
LMT Defense - 5.56mm M4/M16 14.5" AR15 Barrel Assembly - LMP10406
LMT Defense
Now: $401.40Was: $428.40This is a Lewis Machine & Tool M4/M16 style 14.5-inch .223/5.56mm barrel assembly. It features 1/2x28 muzzle threads, a pinned flat-top height front sight gas block, carbine-length gas system, delta-ring handguard retainer, GI barrel nut, and a...Now: $401.40Was: $428.40 -
Out of stockOn Sale
LMT Defense - 5.56mm M4/M16 10.5" AR15 Barrel Assembly - LMP10408
LMT Defense
Now: $401.40Was: $451.80This is a Lewis Machine & Tool M4/M16 style 10.5-inch .223/5.56mm barrel assembly. It features 1/2x28 muzzle threads, a pinned flat-top height front sight gas block, delta-ring handguard retainer, GI barrel nut, and a chrome-lined bore with a 1:7...Now: $401.40Was: $451.80 -
Out of stockOn Sale
LMT Defense - 5.56mm 16" Stainless Steel MRP Barrel Assembly - L7SB1S
LMT Defense
Now: $803.70Was: $893.0016″ Stainless Steel 5.56×45 (.223) 1:7.5″ RH 5R cut barrel Designed for the LMT monolithic receiver, this barrel utilizes a low profile gas block, mid length straight gas tube, and A2 birdcage for reduced flash. The barrel is...Now: $803.70Was: $893.00 -
Out of stock
Ruger - Standard Ruger MK IV Upper 6" Barreled Receiver .22 LR - #VCSCU‑0008
Ruger
$30.00This is a factory new never fired Ruger MK IV stripped barreled receiver chambered for .22 LR. This upper comes with adjustable sights and a 6" stubby pencil profile barrel. The push-button takedown makes switching uppers easier than switching from...$30.00 -
Forward Controls Design - 6310RF 5/8 x 24 Flash Suppressor / Compensator - 6310RF
Forward Controls Design, Inc
MSRP: $90.00$85.50The Forward Controls Design 6310RF Flash Suppressor / Plan B Mount — 5/8x24 (6310RF) is FCD's premium 3-prong flash hider and Plan B/Atlas compatible suppressor mount for .308/7.62x51mm rifles with 5/8x24 muzzle threading. Designed with Revival Defense,...MSRP: $90.00$85.50 -
Forward Controls Design - Select Fire Short Throw to Semi Safety Selector - ASF-SF-50Q
Forward Controls Design, Inc
MSRP: $100.00$95.00The Forward Controls Design Select-Fire Short Throw to Semi Safety Selector (ASF-SF) is FCD's specialized selector for law enforcement and military personnel operating select-fire AR-15/M16 platforms. The ASF-SF maintains a standard throw to FULL-AUTO...MSRP: $100.00$95.00 -
Forward Controls Design - 308 Ambidextrous Charging Handle Black - ACF-308
Forward Controls Design, Inc
MSRP: $125.00$118.75The Forward Controls Design .308/7.62 Ambidextrous Charging Handle — Black (ACF-308) is FCD's duty-grade ambidextrous charging handle designed for .308/7.62x51mm large-frame AR-10/SR-25 pattern rifles including LMT MWS and MARS-H platforms. Features...MSRP: $125.00$118.75 -
Forward Controls Design - Panel Cable Management - PCM
Forward Controls Design, Inc
MSRP: $30.00 - $55.00$28.50 - $52.25The Forward Controls Design Panel Cable Management (PCM) is FCD's lightweight M-LOK cable management panel for routing weapon light, pressure switch, and IR laser cables cleanly along the handguard. The PCM installs directly to M-LOK slots and keeps...MSRP: $30.00 - $55.00$28.50 - $52.25