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& Legendary Daniel Defense Quality
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EXCLUSIVE DANIEL DEFENSE
MK18 & M4A1 STRIPPED UPPERS

RISII & RISIII Rails, Cold Hammer Forged Barrels
& Legendary Daniel Defense Quality
Explore The Uppers
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Rifle Parts

2,617 Items

Browse Rifle Barrels, Stocks, Triggers, Bolt Carriers & More - 2,617 Products / 323 Models

Our range of rifle parts (2,617) and AR15 Parts provides everything you need to maintain, repair, or customize your rifle for any purpose.

We have rifle barrels for precision shooting, stocks for added stability, triggers to enhance control, and bolt carriers for reliable cycling. With options tailored for various rifle platforms, you’ll find the right components to improve rifle's performance.

Shop trusted brands like BROWNELLS, AERO PRECISION, COLT, and MAGPUL and take advantage of savings Up To 80% Off on rifle parts built for quality and reliability. View all our Gun Parts.

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Product badge DANIEL DEFENSE - MK18 STRIPPED SOCOM UPPER RECEIVER DANIEL DEFENSE - MK18 STRIPPED SOCOM UPPER RECEIVER
5 Stars
(4.5)

$749.99

$899.99

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Product badge GEISSELE AUTOMATICS LLC - AR-15 SUPER DUTY RIFLE BUILD KIT 5.56MM GEISSELE AUTOMATICS LLC - AR-15 SUPER DUTY RIFLE BUILD KIT 5.56MM
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$1,584.99 - $1,706.99

$1,711.99 - $1,834.99

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Product badge BROWNELLS - BRN-180 GEN 3 300 BLACKOUT 9" COMPLETE UPPER RECEIVER ASSEMBLY BROWNELLS - BRN-180 GEN 3 300 BLACKOUT 9" COMPLETE UPPER RECEIVER ASSEMBLY
5 Stars
(3.1)

$959.99

$1,199.99

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Product badge DANIEL DEFENSE - M4A1 RIII 5.56X45MM STRIPPED UPPER RECEIVER DANIEL DEFENSE - M4A1 RIII 5.56X45MM STRIPPED UPPER RECEIVER
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(4.9)

$749.99

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Product badge DANIEL DEFENSE - MK18 RIII 5.56X45MM STRIPPED UPPER RECEIVER DANIEL DEFENSE - MK18 RIII 5.56X45MM STRIPPED UPPER RECEIVER
5 Stars
(4.8)

$749.99

$899.99

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Product badge DANIEL DEFENSE - M4A1 SOCOM BLOCK II 5.56 NATO STRIPPED UPPER RECEIVER DANIEL DEFENSE - M4A1 SOCOM BLOCK II 5.56 NATO STRIPPED UPPER RECEIVER
5 Stars
(4.6)

$749.99 - $949.99

$899.99

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Product badge DANIEL DEFENSE - M4A1 FSP 5.56X45MM STRIPPED UPPER RECEIVER DANIEL DEFENSE - M4A1 FSP 5.56X45MM STRIPPED UPPER RECEIVER
5 Stars
(4.9)

$749.99

$899.99

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Product badge BROWNELLS - BRN-180 GEN 3 223 WYLDE 13.9" COMPLETE UPPER RECEIVER BROWNELLS - BRN-180 GEN 3 223 WYLDE 13.9" COMPLETE UPPER RECEIVER
5 Stars
(3.5)

$959.99

$1,199.99

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Product badge GEISSELE AUTOMATICS LLC - MK16 URG-I COMPLETE UPPER RECEIVERS 5.56MM GEISSELE AUTOMATICS LLC - MK16 URG-I COMPLETE UPPER RECEIVERS 5.56MM
5 Stars
(4.8)

$1,348.99

$1,525.00

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Product badge GEISSELE AUTOMATICS LLC - SSA-E SUPER SEM-AUTOMATIC ENHANCED 2-STAGE TRIGGER FOR AR-15 GEISSELE AUTOMATICS LLC - SSA-E SUPER SEM-AUTOMATIC ENHANCED 2-STAGE TRIGGER FOR AR-15
5 Stars
(4.9)

$198.99

$245.00

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Product badge BROWNELLS - BRN-180 GEN 3 223 WYLDE 16" COMPLETE UPPER RECEIVER ASSEMBLY BROWNELLS - BRN-180 GEN 3 223 WYLDE 16" COMPLETE UPPER RECEIVER ASSEMBLY
5 Stars
(3.3)

$959.99

$1,199.99

In stock
Product badge GEISSELE AUTOMATICS LLC - SSA-E X 2-STAGE TRIGGER WITH LIGHTNING BOW® FOR AR-15 GEISSELE AUTOMATICS LLC - SSA-E X 2-STAGE TRIGGER WITH LIGHTNING BOW® FOR AR-15
5 Stars
(4.4)

$265.99

$335.00

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Product badge GEISSELE AUTOMATICS LLC - AR-15 ULTRA DUTY LOWER PARTS KITS GEISSELE AUTOMATICS LLC - AR-15 ULTRA DUTY LOWER PARTS KITS
5 Stars
(5.0)

$121.99 - $125.99

$153.00 - $158.00

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Product badge GEISSELE AUTOMATICS LLC - AR-15 SUPER DUTY MOD1 5.56X45 NATO COMPLETE UPPER RECEIVER GEISSELE AUTOMATICS LLC - AR-15 SUPER DUTY MOD1 5.56X45 NATO COMPLETE UPPER RECEIVER
5 Stars
(4.1)

$1,171.99 - $1,282.99

$1,325.00 - $1,450.00

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Product badge DIE FREE CO - KUNG FU GRIP FOR AR15 / M4 RIFLE GRIP DIE FREE CO - KUNG FU GRIP FOR AR15 / M4 RIFLE GRIP
5 Stars
(4.7)

$13.99

$18.00

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Product badge BROWNELLS - BRN-15 UPPER RECEIVERS 5.56MM NATO BROWNELLS - BRN-15 UPPER RECEIVERS 5.56MM NATO
5 Stars
(3.8)

$336.99 - $356.99

$399.99 - $429.99

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Product badge GEISSELE AUTOMATICS LLC - AR-15 AIRBORNE CHARGING HANDLE GEISSELE AUTOMATICS LLC - AR-15 AIRBORNE CHARGING HANDLE
5 Stars
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$87.99 - $94.99

$110.00 - $120.00

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Product badge BROWNELLS - BRN-15 11.5" UPPER RECEIVER ASSEMBLY 5.56MM BROWNELLS - BRN-15 11.5" UPPER RECEIVER ASSEMBLY 5.56MM
5 Stars
(5.0)

$350.99

$407.25

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Product badge GEISSELE AUTOMATICS LLC - SD-E SUPER DYNAMIC ENHANCED 2-STAGE FLAT TRIGGER FOR AR-15 GEISSELE AUTOMATICS LLC - SD-E SUPER DYNAMIC ENHANCED 2-STAGE FLAT TRIGGER FOR AR-15
5 Stars
(4.8)

$198.99

$250.00

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Product badge BROWNELLS - XM177E2 COMPLETE UPPER RECEIVERS BROWNELLS - XM177E2 COMPLETE UPPER RECEIVERS
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$688.99 - $734.99

$806.59 - $859.99

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Product badge GEISSELE AUTOMATICS LLC - G2S GEISSELE-2-STAGE TRIGGER FOR AR-15 GEISSELE AUTOMATICS LLC - G2S GEISSELE-2-STAGE TRIGGER FOR AR-15
5 Stars
(4.7)

$138.99

$175.00

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Product badge GEISSELE AUTOMATICS LLC - SUPER 42 BRAIDED WIRE SPRING & BUFFERS GEISSELE AUTOMATICS LLC - SUPER 42 BRAIDED WIRE SPRING & BUFFERS
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$67.99 - $112.99

$85.00 - $142.00

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Product badge GEISSELE AUTOMATICS LLC - MARITIME BOLT CATCH FOR AR-15 GEISSELE AUTOMATICS LLC - MARITIME BOLT CATCH FOR AR-15
5 Stars
(4.5)

$25.99

$31.00

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Product badge DIE FREE CO - PLUG FOR KUNG FU GRIP DIE FREE CO - PLUG FOR KUNG FU GRIP
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$9.99

$11.99

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Product badge GEISSELE AUTOMATICS LLC - B-G2S-E BROWNELLS/GEISSELE ENHANCED 2-STAGE TRIGGER FOR AR-15 GEISSELE AUTOMATICS LLC - B-G2S-E BROWNELLS/GEISSELE ENHANCED 2-STAGE TRIGGER FOR AR-15
5 Stars
(4.4)

$145.99

$179.99

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Product badge BROWNELLS - BRN-15 13.7" UPPER RECEIVER ASSEMBLY 5.56MM BROWNELLS - BRN-15 13.7" UPPER RECEIVER ASSEMBLY 5.56MM
5 Stars
(5.0)

$351.99

$412.93

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Product badge GEISSELE AUTOMATICS LLC - SUPER 42 TUNGSTEN BUFFER WEIGHT GEISSELE AUTOMATICS LLC - SUPER 42 TUNGSTEN BUFFER WEIGHT
5 Stars
(5.0)

$25.99

$32.00

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Product badge GEISSELE AUTOMATICS LLC - SUPER CHARGING HANDLES GEISSELE AUTOMATICS LLC - SUPER CHARGING HANDLES
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$87.99 - $94.99

$110.00 - $120.00

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Product badge FAXON FIREARMS - 5.56X45MM NATO MIL-SPEC BOLT CARRIER GROUP FOR AR-15/M16 FAXON FIREARMS - 5.56X45MM NATO MIL-SPEC BOLT CARRIER GROUP FOR AR-15/M16
5 Stars
(3.0)

$120.06 - $164.77

$133.40 - $183.08

In stock
Product badge GEISSELE AUTOMATICS LLC - SD-C SUPER DYNAMIC COMBAT 2-STAGE FLAT TRIGGER FOR AR-15 GEISSELE AUTOMATICS LLC - SD-C SUPER DYNAMIC COMBAT 2-STAGE FLAT TRIGGER FOR AR-15
5 Stars
(4.8)

$198.99

$250.00

In stock
Product badge GEISSELE AUTOMATICS LLC - SD-3G SUPER DYNAMIC 3-GUN FLAT TRIGGER FOR AR-15 GEISSELE AUTOMATICS LLC - SD-3G SUPER DYNAMIC 3-GUN FLAT TRIGGER FOR AR-15
5 Stars
(5.0)

$198.99

$250.00

In stock
Product badge FAXON FIREARMS - RIMFIRE BOLT ASSEMBLY FOR RUGER 10/22® FAXON FIREARMS - RIMFIRE BOLT ASSEMBLY FOR RUGER 10/22®
5 Stars
(4.8)

$111.78

$124.20

In stock
Products:  1  –  32  of 369