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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Forward Controls Design - 5.56 Ambidextrous Charging Handle - BLACK - ACF-556
Forward Controls Design, Inc
MSRP: $120.00$114.00The Forward Controls Design 5.56 Ambidextrous Charging Handle — Black (ACF-556) is FCD's duty-grade ambidextrous charging handle for 5.56 AR-15/M16-pattern rifles. The ACF (Ambidextrous Charging...MSRP: $120.00$114.00 -
On Sale
Sons of Liberty Gun Works - Gas Block .750 V2 - Nitride Finish - GB750V2
Sons of Liberty Gunworks
MSRP: $50.00Now: $45.00Was: $52.50As the gas system blowback style is typically the standard for most AR-15 style rifles, an AR-15 gas block is essential in the operation of the rifle. Designed to direct the gas back into the gas...MSRP: $50.00Now: $45.00Was: $52.50 -
On Sale
Magpul MS4 QDM Sling Fits AR Rifles Black MAG953-BLK
Magpul Industries
MSRP: $79.95Now: $75.95Was: $79.95The Magpul MS4 QDM Sling — Black (MAG953-BLK) is Magpul's versatile convertible two-point/one-point sling for AR-15/M4 style rifles. The MS4 (Multi-Point Sling System, Generation 4) QDM (Quick...MSRP: $79.95Now: $75.95Was: $79.95 -
On Sale
Magpul PMAG Gen 2 MOE 30rd. .223/5.56mm AR15 Magazine
Magpul Industries
MSRP: $12.95Now: $12.30Was: $12.95The Magpul PMAG 30 AR/M4 GEN M2 MOE .223/5.56 Magazine — Black (MAG571-BLK) is Magpul's GEN M2 MOE 30-round PMAG for AR-15/M4 rifles. The GEN M2 MOE was the first major update to the original PMAG,...MSRP: $12.95Now: $12.30Was: $12.95 -
Daniel Defense .223REM/5.56NATO Lower Receiver Parts Kit - 05-013-21007
Daniel Defense
MSRP: $127.00$122.00The Daniel Defense Lower Parts Kit, Semi-Auto is for those interested in assembling their own AR15. Although there are many manufacturers of so-called MIL-SPEC parts, we have gone to great lengths to...MSRP: $127.00$122.00 -
Trijicon RMRcc 3.25 MOA Micro Red Dot Sight
Trijicon
$699.00Split seconds matter. The new Trijicon RMRcc has a thinner, lower-profile design that reduces the risk of snags for a faster and easier draw. Although smaller, the RMRcc keeps all the great features...$699.00 -
LMT Defense - .308 Piston Bolt Carrier Group - R-LM308DPS
LMT Defense
MSRP: $762.00$706.50The LMT Defense .308 Piston Bolt Carrier Group (R-LM308DPS) is the large-frame 7.62x51mm NATO piston BCG designed for LMT's MRP-H piston-operated AR-10/MWS platform. Built with the same materials and...MSRP: $762.00$706.50 -
iRayUSA - ADM-RQD Quick Release Mount for RICO AC03
iRayUSA
$199.00The AD-RQD was designed to marry perfectly with the RICO Mk1, RICO Bravo, and RICO ALPHA. It is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize. It features the...$199.00 -
On Sale
B5 Systems Type 22 P-Grip - Multicam PGR-1135
B5 Systems
Now: $27.55Was: $29.00The B5 Systems Type 22 P-Grip in Multicam (PGR-1135) delivers the same premium ergonomics and built-in storage of the Type 22 P pistol grip in an embedded Multicam camouflage pattern. The Type 22 P's...Now: $27.55Was: $29.00 -
Forward Controls Design - Sling Adapter End Plate - ESF-H FDE
Forward Controls Design, Inc
$62.70The Forward Controls Design Sling Adapter End Plate — FDE (ESF-H FDE) is FCD's enhanced QD sling socket end plate for AR-15/M16 carbine lower receivers, finished in FDE (Flat Dark Earth) for use with...$62.70 -
Forward Controls Design - Low Snag Forward Assist Dimpled - LSFA-AA
Forward Controls Design, Inc
MSRP: $48.00$45.60The Forward Controls Design Low Snag Forward Assist — Dimpled (LSFA-AA) is FCD's most minimalist forward assist design for AR-15/M16 upper receivers. The LSFA (Low Snag Forward Assist, Forward...MSRP: $48.00$45.60 -
Forward Controls Design - Low Drag Forward Assist - LDFA
Forward Controls Design, Inc
MSRP: $42.00$39.99The Forward Controls Design Low Drag Forward Assist (LDFA) is FCD's sleek, redesigned forward assist for AR-15/M16 upper receivers. The standard AR-15 forward assist features a large, protruding...MSRP: $42.00$39.99