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 stock
Unity Tactical - Fast Omni Magnifier Mount - FST-OMF
Unity Tactical
MSRP: $269.00$264.00Unity Tactical, FAST, Magnifier Mount, 2.26" Optical Height, Compatible with G23, G30, G33, G43, G45, VMX-3T, Micro3X, Micro6X, 3X MAG-C, Juliet3X, Juliet4X, Juliet Micro3X, Anodized Finish, Flat Dark Earth FAST is a series of optic mounts and...MSRP: $269.00$264.00 -
On Sale
Unity Tactical fast red dot riser elevates lower 1/3 mount to 2.26" optical height
Unity Tactical
MSRP: $105.00Now: $95.00Was: $105.00The Unity Tactical FAST Red Dot Riser (FST-ORB) in Black elevates lower 1/3 co-witness mounted red dots and optics to 2.26" optical height. Designed for optics currently mounted at lower 1/3 co-witness height that need to be raised to Unity's 2.26" FAST...MSRP: $105.00Now: $95.00Was: $105.00 -
On Sale
Unity Tactical - FAST Red Dot Riser Absolute Cowitness to 2.26" - FST-ORAF
Unity Tactical
Now: $95.00Was: $105.00The Unity Tactical FAST Red Dot Riser in FDE/Tan elevates absolute co-witness optics to 2.26" optical height (FST-ORAF), providing the same FAST riser functionality as the black version in a Flat Dark Earth finish for coordinated FDE rifle builds...Now: $95.00Was: $105.00 -
Knight's Armament - JAMR - 111789
Knights Armament Company
$455.99The Knight's Armament JAMR (KAC PN: 111789) is KAC's Joint Assault Machine gun Rail — an accessory rail system designed for use with the M249 SAW (Squad Automatic Weapon) and other crew-served light machine gun platforms. The KAC JAMR provides...$455.99 -
On Sale
Sons of Liberty Gun Works - Blaster Guts Lower Parts Kit - BG-LT
Sons of Liberty Gunworks
MSRP: $120.00Now: $110.00Was: $120.00Lower Parts Kit made from only the highest quality Mil-Spec or better components. The SOLGW Bolt Catch and Safety Selector are a Mil-Spec AISI8620 investment casting per the USGI TDP. Their Safety and Takedown Pivot Detents are solid hardened Stainless...MSRP: $120.00Now: $110.00Was: $120.00 -
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 Handle, Forward Controls) is engineered specifically for...MSRP: $120.00$114.00 -
Out of stockOn Sale
BT Atlas - Atlas M-LOK Adapter - #BT70
BT Atlas
Now: $34.95Was: $49.95The BT70 Atlas M-LOK® Adapter is an interface between all Atlas bipods with the “NC” designator in their names (BT10-NC, BT46-NC, BT47-NC, BT35-NC, BT65-NC, BT69-NC, BT72-NC) and M-LOK style mounting systems. It requires two (2) M-LOK...Now: $34.95Was: $49.95 -
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 tube through a port, the gas block directs the gases...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 Detach, Metal hardware) allows quick conversion between a...MSRP: $79.95Now: $75.95Was: $79.95 -
Out of stockOn Sale
Magpul Bipod Hard Anodized 6061 T-6 Aluminum Fits A.R.M.S And 17S Style Rails 6.3"-10.3" Length FDE #MAG951-FDE
Magpul Industries
Now: $109.20Was: $114.95The Magpul Bipod offers serious strength and versatility at a price that provides unmatched value. Rich with important features, Magpul's lightweight Mil-spec hard anodized 6061 T-6 aluminum and injection-molded polymer bipod brings innovation in...Now: $109.20Was: $114.95 -
Out of stock
Unity Tactical Clutch belt large (37"-47" waist) Gray
Unity Tactical
$150.00CLUTCH is the ultimate solution for concealment of mission critical gear in non-permissive environments. Designed to make a combat loadout disappear under civilian clothes, CLUTCH is a must-have system for anyone conducting low-vis or undercover...$150.00 -
Out of stockOn Sale
Unity Tactical fast LPVO mount 2.05" optical height 30mm FDE
Unity Tactical
MSRP: $369.00Now: $335.00Was: $369.00FAST is a series of optic mounts and platforms that provide end users with a quicker sight picture than standard height mounts. A 2.05" optical centerline height provides faster/easier reticle acquisition while wearing electronic EarPro/communications...MSRP: $369.00Now: $335.00Was: $369.00