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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LMT Defense - 5.56 Lower Parts Kit Light (No Trigger Group) - R-LM556LPKL
LMT Defense
MSRP: $152.00$141.30The LMT Defense 5.56 Lower Parts Kit Light (R-LM556LPKL) provides all the mil-spec small parts needed to complete an AR-15 lower receiver build — minus the trigger group. This "light" version is...MSRP: $152.00$141.30 -
On Sale
LMT Defense - Ambidextrous Charging Handle Assembly - .308 - #R-LM308CB
LMT Defense
Now: $145.80Was: $150.30LMT Defense Ambidextrous .308 Charging Handle with Enhanced Tactical Latch. Utilizes dead stop latches to reduce tension on latch pins. A great cost effective upgrade for any SR-25 pattern modern...Now: $145.80Was: $150.30 -
Out of stock
Glock - 9mm OEM Complete Slides MOS and Standard
Glock
$342.50New Glock 9mm OEM Complete Slides. *Photos are of some of the slides we are selling but are otherwise generic.Â$342.50 -
Out of stock
Proof Research - Carbon Fiber LMT MWS Converted 6.5CM Barrel - PRCFMWS-CONV
Proof Research
$1,250.00Proof Research carbon fiber 6.5 CM barrel converted by D.Wilson Mfg to fit LMT's MWS platform. These barrels are 8 twist, 4 groove, 5/8-24 threaded and accept an .875 gas block. Proof Research PR10 6...$1,250.00 -
Knight's Armament - Vertical Forward Pistol Grip - Black - 97098
Knights Armament Company
$83.73The Knight's Armament Company Vertical Forward Pistol Grip — Black (KAC PN: 97098) is KAC's mil-spec-quality vertical foregrip for MIL-STD-1913 Picatinny rail handguards. The KAC vertical grip...$83.73 -
Knight's Armament - Folding Micro Front Sight - 25654
Knights Armament Company
$174.24The Knight's Armament Folding Micro Front Sight (KAC PN: 25654) is KAC's precision folding front iron sight for SR-15, SR-25, and AR-15/M16 pattern rifles with MIL-STD-1913 Picatinny gas block rails...$174.24 -
Out of stockOn Sale
LMT Defense - Tactical Front Sight - L8FS
LMT Defense
Now: $87.30Was: $90.00The LMT Defense Tactical Front Sight was designed to give users of same plane upper receivers and rail systems, the ability to utilize a fixed front sight with full elevation adjustment. This front...Now: $87.30Was: $90.00 -
Out of stockOn Sale
Knight's Armament - 5.56mm Enhanced Compensator Kit - #133001
Knights Armament Company
Now: $591.38Was: $622.50NEW 3D Printed version of the original.The KAC 5.56 Enhanced Compensator Kit also known as the "Triple Tap" or "3T" has been engineered to increase controllability, to significantly reduce felt...Now: $591.38Was: $622.50 -
Out of stock
Knight's Armament - Rubberized Thumb Rest - 30537
Knights Armament Company
$23.76The Knight's Armament Rubberized Thumb Rest (KAC PN: 30537) is KAC's soft-touch rubberized thumb rest for installation on MIL-STD-1913 Picatinny rail sections on KAC handguards and upper receivers...$23.76 -
LMT Defense - Semi-Auto Axle Trigger Group - LMP2400ES
LMT Defense
MSRP: $250.00$231.75The LMT Defense Semi-Auto AXLE Trigger Group (LMP2400ES) is one of the finest combat triggers in the firearms industry. The AXLE is a patented two-stage trigger system that blends the best features...MSRP: $250.00$231.75 -
Out of stock
LMT Defense - 5.56 Enhanced Full-Auto Bolt Carrier - R-L7Q3A
LMT Defense
MSRP: $239.00$221.85The LMT Defense 5.56 Enhanced Full-Auto Bolt Carrier (R-L7Q3A) is LMT's enhanced direct impingement 5.56 bolt carrier group, full-auto rated for maximum longevity. The enhanced carrier design...MSRP: $239.00$221.85 -
On Sale
Surefire Warden Fast-Attach 5.56/7.62 Blast Regulator - Non-NFA, Cerakote Finish
Surefire
MSRP: $329.00Now: $296.00Was: $329.00The SureFire Warden Fast-Attach 5.56/7.62 Blast Regulator — Black, Non-NFA (WARDEN-BK) is SureFire's Warden blast regulator — a non-NFA device that attaches to SureFire WARCOMP and other...MSRP: $329.00Now: $296.00Was: $329.00