AR-15 Parts

AR-15 Parts

Shop our extensive inventory of AR-15 parts and modern sporting rifle (MSR) components. From fully assembled MIL-SPEC upper receivers and enhanced lower parts kits to free-float M-LOK handguards and ambidextrous controls, we carry the critical components required for duty, defense, and custom builds.

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  • Forward Controls Design - 5.56 Ambidextrous Charging Handle - BLACK - #ACF-556 - 686162348022- Boss Firearms - BossFirearms.com Forward Controls Design - 5.56 Ambidextrous Charging Handle - BLACK - #ACF-556 - 686162348022- Boss Firearms - BossFirearms.com

    Forward Controls Design - 5.56 Ambidextrous Charging Handle - BLACK - ACF-556

    Forward Controls Design, Inc

    MSRP: $120.00
    $114.00
    The 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
    Qty in Cart: 0
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    MSRP: $120.00
    $114.00
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  • Out of stock
    On Sale
    Knight's Armament - Rail Mount Anti-Cant Device - #114294 - 819064018209 - Boss Firearms - BossFirearms.com

    Knight's Armament - Rail Mount Anti-Cant Device - #114294

    Knights Armament Company

    MSRP: $129.94
    Now: $123.44
    Was: $129.94
    The Knights Armament Company Rail Mounted Anti-Cant Device is a Picatinny rail-mounted bubble level lets you know if the rifle is canted while shooting. This is especially beneficial with long range...
    MSRP: $129.94
    Now: $123.44
    Was: $129.94
    Qty in Cart: 0
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    MSRP: $129.94
    Now: $123.44
    Was: $129.94
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  • Out of stock
    On Sale
    Knight's Armament M4 5.56 Carbine Rail Adapter System Assembly - Aluminum, Anodized Finish #98064

    Knight's Armament M4 5.56 Carbine Rail Adapter System Assembly - Aluminum, Anodized Finish #98064

    Knights Armament Company

    MSRP: $310.28
    Now: $294.76
    Was: $310.28
    The KAC M4 RAS (Rail Adapter System) was developed for use on the US military’s M4 Carbine, and with over 1 million rails issued to date, it is one of the most battle proven designs available for the...
    MSRP: $310.28
    Now: $294.76
    Was: $310.28
    Qty in Cart: 0
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    MSRP: $310.28
    Now: $294.76
    Was: $310.28
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  • Q - QSERT Handguard for The Fix by Q - Clear Anodized Gray Finish 7" - Boss Firearms - BossFirearms.com Q - QSERT Handguard for The Fix by Q - Clear Anodized Gray Finish 11" - Boss Firearms - BossFirearms.com

    Q LLC - QSERT Handguard for The Fix by Q - Clear Anodized Gray Finish QSERT HANDGUARD

    Q LLC

    $300.00
    Enhance your Q Fix rifle with the Q QSERT Handguard, designed for optimal performance and customization. Crafted from lightweight yet durable 6061-T6 Aluminum, this handguard is a testament to Q's...
    $300.00
    Qty in Cart: 0
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    $300.00
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  • CMMG AR15 223/5.56mm Complete Lower Parts Kit - Boss Firearms - 55CA6C5

    CMMG AR15 223/5.56mm Complete Lower Parts Kit 55CA6C5

    CMMG

    $69.95
      All the parts you need to get started on your next AR15 build. Combine this kit with a buttstock kit to complete your lower group. All parts meet or exceed mil-spec
    $69.95
    Qty in Cart: 0
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    $69.95
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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...
    Now: $34.95
    Was: $49.95
    Qty in Cart: 0
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    Now: $34.95
    Was: $49.95
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  • Out of stock
    On Sale
    Knight's Armament - 5.56mm Enhanced Compensator Kit - #133001 - 819064018797 - Boss Firearms - BossFirearms.com

    Knight's Armament - 5.56mm Enhanced Compensator Kit - #133001

    Knights Armament Company

    Now: $591.38
    Was: $622.50
    NEW 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: $591.38
    Was: $622.50
    Qty in Cart: 0
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    Now: $591.38
    Was: $622.50
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  • Out of stock
    On Sale
    Midwest Industries HANDGUARD 308 COMBAT RAIL 12.625" DPMS HIGH MLOK SR25 - MI-CR308-12.625 - 812102033172- Boss Firearms - BossFirearms.com

    Midwest Industries HANDGUARD 308 COMBAT RAIL 12.625" DPMS HIGH MLOK SR25 #MI-CR308-12.625

    Midwest Industries

    Now: $189.95
    Was: $199.95
    Looking to take your DPMS-pattern AR .308 rifle to the next level? This enhanced Combat Rail M-LOK Handguard from Midwest Industries is purpose-built to provide added versatility and durability to...
    Now: $189.95
    Was: $199.95
    Qty in Cart: 0
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    Now: $189.95
    Was: $199.95
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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...
    Now: $199.95
    Was: $209.95
    Qty in Cart: 0
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    Now: $199.95
    Was: $209.95
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  • On Sale
    Spike's Tactical - Forged Charging Handle - Black Finish - SUH100F - 855713006982 - Boss Firearms - BossFirearms.com Spike's Tactical - Forged Charging Handle - Black Finish - SUH100F - 855713006982 - Boss Firearms - BossFirearms.com

    Spike's Tactical - Forged Charging Handle - Black Finish SUH100F

    Spike's Tactical

    Now: $22.50
    Was: $25.00
    Standard AR-15 charging handle compatible with all Spike's upper options. Forged 7075 T6 Aluminum Mil-Spec Type-III Hardcoat Anodized
    Now: $22.50
    Was: $25.00
    Qty in Cart: 0
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    Now: $22.50
    Was: $25.00
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  • Out of stock
    Sig Sauer - MCX/MPX Folding Stock - Minimalist Plus - Black - STOCK-X-FOLD-PLUS-BLK - Boss Firearms - BossFirearms.com

    Sig Sauer - MCX/MPX Folding Stock - Minimalist Plus - Black - #STOCK-X-FOLD-PLUS-BLK

    Sig Sauer

    $199.99
    SIG SAUER factory aluminum minimalist plus, folding stock installs easily on your MCX/MPX via the receiver's 1913/picatinny interface. Overall length - 9"Overall height - 4.5"Butt-pad width - ...
    $199.99
    Qty in Cart: 0
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    $199.99
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  • Out of stock
    On Sale
    REPTILIA RECC-E STOCK - FDE - 100-142 - 850022282683 - Boss Firearms - BossFirearms.com

    Reptilia RECC-E Carbine Length AR-15 Stock - FDE #100-142

    Reptilia

    Now: $143.96
    Was: $159.95
    Introducing the RECCE Carbine Stock by Reptilia! After more than two years of development and testing, Reptilia is proud to announce the RECCE Stock for AR15/M16 and AR10/SR25 pattern rifles...
    Now: $143.96
    Was: $159.95
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    Now: $143.96
    Was: $159.95
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