AR-15 Parts

AR-15 Parts

Shop our extensive inventory of AR-15 parts and modern sporting rifle components. From fully assembled upper receivers to enhanced lower parts kits. 

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  • Knight's Armament - JAMR - #111789 - 819064017349 - Boss Firearms - BossFirearms.com

    Knight's Armament - JAMR - 111789

    Knights Armament Company

    $455.99
    The 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
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    $455.99
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  • On Sale
    Sons of Liberty Gun Works - SOLGW - Blaster Guts Lower Parts Kit - #BG-LT - 785939519419

    Sons of Liberty Gun Works - Blaster Guts Lower Parts Kit - BG-LT

    Sons of Liberty Gunworks

    MSRP: $120.00
    Now: $110.00
    Was: $120.00
    Lower 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: $120.00
    Now: $110.00
    Was: $120.00
    Qty in Cart: 0
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    MSRP: $120.00
    Now: $110.00
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  • Out of stock
    On Sale
    BT Atlas - Atlas M-LOK Adapter - BT70 - Boss Firearms - BossFirearms.com BT Atlas - Atlas M-LOK Adapter - BT70 - Boss Firearms - BossFirearms.com

    BT Atlas - Atlas M-LOK Adapter - #BT70

    BT Atlas

    Now: $34.95
    Was: $49.95
    The 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: $34.95
    Was: $49.95
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  • On Sale
    Magpul MS4 QDM Sling Fits AR Rifles Black - MAG953-BLK - 840815119418 - Boss Firearms - BossFirearms.com

    Magpul MS4 QDM Sling Fits AR Rifles Black MAG953-BLK

    Magpul Industries

    MSRP: $79.95
    Now: $75.95
    Was: $79.95
    The 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: $79.95
    Now: $75.95
    Was: $79.95
    Qty in Cart: 0
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    MSRP: $79.95
    Now: $75.95
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  • Daniel Defense Lower Parts Kit - 05-013-21007 - Boss Firearms

    Daniel Defense .223REM/5.56NATO Lower Receiver Parts Kit - 05-013-21007

    Daniel Defense

    MSRP: $127.00
    $122.00
    The 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 ensure the parts we provide are of the...
    MSRP: $127.00
    $122.00
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    MSRP: $127.00
    $122.00
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  • Out of stock
    On Sale
    BT Atlas Bipod Super Cal - Boss Firearms BT Atlas Bipod Super Cal - Boss Firearms

    BT Atlas - Bipod Super Cal - BT72-LW17

    BT Atlas

    Now: $439.95
    Was: $569.95
    The BT72-LW17 Super CAL (Cant And Loc) Atlas Bipod does not PAN. This model mounts directly to any 1913 style Picatinny rail via the included ADM-170-S Lever. Includes patented 45° leg positions, non-rotating legs, optional quick change feet and...
    Now: $439.95
    Was: $569.95
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    Now: $439.95
    Was: $569.95
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  • Out of stock
    PRi - Douglas 5.56 Stainless Steel Barrel 18" - 1~7 twist - 05-556-18DD-7-X - Boss Firearms - BossFirearms.com PRi - Douglas 5.56 Stainless Steel Barrel 18" - 1~7 twist - 05-556-18DD-7-X - Boss Firearms - BossFirearms.com

    PRi - Douglas 5.56 Stainless Steel Barrel 18" - 1~7 twist - 05-556-18DB-7-X

    Precision Reflex, Inc.

    $510.00
    Douglas 18" Black Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps.  Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE  brakes and collar.   this is the barrel designed and...
    $510.00
    Qty in Cart: 0
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    $510.00
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  • Haley Strategic Partners - Thorntail X Inline Light Mount - LM_TX_MLOK_INL-1-1-BLK - Boss Firearms - BossFirearms.com Haley Strategic Partners - Thorntail X Inline Light Mount - LM_TX_MLOK_INL-1-1-BLK - Boss Firearms - BossFirearms.com

    Haley Strategic Partners - Thorntail X Inline Light Mount -LM_TX_MLOK_INL-1-1-BLK

    $45.00
    The Haley Strategic Partners Thorntail X Inline Light Mount for M-LOK (LM_TX_MLOK_INL-1-1-BLK) is a precision-machined weapon light mounting solution designed to mount a SureFire Scout-style weapon light inline (parallel and underneath) with the rifle...
    $45.00
    Qty in Cart: 0
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    $45.00
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  • VLTOR - Set Screw Gas Block - 0.625" to 0.750" Bore - Boss Firearms - BossFirearms.com VLTOR - Set Screw Gas Block - 0.625" to 0.750" Bore - Boss Firearms - BossFirearms.com

    VLTOR - Set Screw Gas Block - 0.625" to 0.750" Bore GB-S

    Vltor Weapon Systems

    $64.95
    The VLTOR Set Screw Gas Block (GB-S) is a low-profile, steel gas block engineered to replace the standard front sight base on AR-15 barrels, allowing use of free-float handguards without obstruction. The set-screw design (versus pinned) enables tool-free...
    $64.95
    Qty in Cart: 0
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    $64.95
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  • Out of stock
    VLTOR - MK14/EBR Stock Adapter - #RE-EBR - Boss Firearms - BossFirearms.com VLTOR - MK14/EBR Stock Adapter - #RE-EBR - Boss Firearms - BossFirearms.com

    VLTOR - MK14/EBR Stock Adapter - #RE-EBR

    Vltor Weapon Systems

    $456.95
    The RE-EBR VLTOR Stock Adaptor was developed specifically for the Sage International MK14 Enhanced Battle Rifle chassis. This stock adaptor provides flexibility and comfort, as it allows for installation of any mil-spec M4/AR15 buttstock onto a SAGE EBR...
    $456.95
    Qty in Cart: 0
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    $456.95
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  • Out of stock
    VLTOR - AR15 Charging Handle - 5.56 - VCH-AR15 - Boss Firearms - BossFirearms.com VLTOR - AR15 Charging Handle - 5.56 - VCH-AR15 - Boss Firearms - BossFirearms.com

    VLTOR - AR15 Charging Handle - 5.56 - #VCH

    Vltor Weapon Systems

    MSRP: $65.95 - $105.95
    $64.76 - $98.06
    After a years-long stint in legal and logistical purgatory, the best-selling charging handle of the past decade has made its return. Previously licensed and distributed by BCM as the original GUNFIGHTER™ Charging Handle, VLTOR’s patented...
    MSRP: $65.95 - $105.95
    $64.76 - $98.06
    Qty in Cart: 0
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    MSRP: $65.95 - $105.95
    $64.76 - $98.06
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  • On Sale
    Midwest Industries, Light Weight M-LOK Handguard, Fits AR-15 Rifles, 12.625" Free Float Handguard, Wrench and Mounting Hardware Included - MI-CRLW12.625 - 812102032212 - Boss Firearms - BossFirearms.com

    Midwest Industries, Light Weight M-LOK Handguard, Fits AR-15 Rifles, 12.625" Free Float Handguard, Wrench and Mounting Hardware Included MI-CRLW12.625

    Midwest Industries

    Now: $199.95
    Was: $209.95
    The Midwest Industries Combat Rail Lightweight Series Handguard is a 1-piece design that features M-LOK accessory mounting slots along its length and short Picatinny rail sections at the 12 o'clock position for the addition of backup iron sights. This...
    Now: $199.95
    Was: $209.95
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    Now: $199.95
    Was: $209.95
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