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Daily Deal: Rise Armament 1776 Edition AR Trigger $149.00 $125.99 - Get Yours! 

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Brownells Exclusive
DANIEL DEFENSE
MK18 & M4A1
STRIPPED UPPERS
JUST $694.99 THIS LABOR DAY
Featuring RIS II & RIS III rails, cold hammer forged barrels & legendary Daniel Defense quality.
Explore The Uppers
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BROWNELLS
BRN-180® GEN3

You've Been Waiting -Don't Miss Out Again!
Back In Stock!
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THE GOLD STANDARD
OF AR UPGRADES!

Shop Geissele Uppers,Triggers, and Upgrades!
On Sale Now!
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EXCLUSIVE HOWA BARRELED ACTIONS
- PERFORMANCE GUARANTEED

Howa barreled actions ensure
the confidence needed to hit your mark
on the range, at competition or on the hunt!
Learn More
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SMALLER.
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LAW FOLDER GEN S
SMALLER.
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THE BETTER HALF
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Brownells BRN-180M
Fully Ambidextrous Lower
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Rifle Receivers & Parts

339 Items

Rifle Receivers & Parts — 339 Products In Stock / 109 Models

Our Rifle Receivers & Parts selection features 339 in-stock products including Upper Receivers, Rifle Barreled Actions, & Bolt Catch Parts from 88 premium brands including AERO PRECISION, BROWNELLS, & HOWA.  Browse our full Rifle Parts selection here.

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Products:  33  –  64  of 649
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Product badge BROWNELLS - BRN-15 STRIPPED FORGED LOWER RECEIVER BROWNELLS - BRN-15 STRIPPED FORGED LOWER RECEIVER
5 Stars
(0.0)

$99.99

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

$694.99

$899.99

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

$694.99

$899.99

In stock
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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)

$694.99

$899.99

In stock
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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)

$694.99

$899.99

In stock
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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)

$694.99 - $799.99

$899.99 - $949.99

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Product badge BROWNELLS - BRN-22 STRIPPED RECEIVER FOR RUGER® 10/22® BROWNELLS - BRN-22 STRIPPED RECEIVER FOR RUGER® 10/22®
5 Stars
(4.2)

$99.99 - $119.99

$107.99 - $149.99

In stock
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Product badge HOWA - M1500 6.5 CREEDMOOR BARRELED ACTION HOWA - M1500 6.5 CREEDMOOR BARRELED ACTION
5 Stars
(4.5)

$448.99

$552.31

Online Only - In stock
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)

$1,311.99

$1,525.00

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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)

$1,139.99 - $1,246.99

$1,325.00 - $1,450.00

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BROWNELLS - XM177E2 COMPLETE UPPER RECEIVERS BROWNELLS - XM177E2 COMPLETE UPPER RECEIVERS
5 Stars
(4.4)

$806.59 - $859.99

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CMMG - AR-15 BUFFER RETAINER CMMG - AR-15 BUFFER RETAINER
5 Stars
(5.0)

$2.35 - $2.95

In stock
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MAGPUL - B.A.D. LEVER® BATTERY ASSIST DEVICE FOR AR-15/M4 MAGPUL - B.A.D. LEVER® BATTERY ASSIST DEVICE FOR AR-15/M4
5 Stars
(4.4)

$32.25

In stock
CMMG - AR-15 BOLT CATCH ROLL PIN CMMG - AR-15 BOLT CATCH ROLL PIN
5 Stars
(4.2)

$1.03

In stock
BROWNELLS - AR-15/M16 M16A2 STRIPPED UPPER RECEIVER BROWNELLS - AR-15/M16 M16A2 STRIPPED UPPER RECEIVER
5 Stars
(1.5)

$149.99

In stock
Product badge GEISSELE AUTOMATICS LLC - AR-15 PREMIUM MIL-SPEC BUFFER TUBE ASSEMBLY WITH SUPER 42 GEISSELE AUTOMATICS LLC - AR-15 PREMIUM MIL-SPEC BUFFER TUBE ASSEMBLY WITH SUPER 42
5 Stars
(5.0)

$113.99 - $168.99

$133.00 - $197.00

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BROWNING - BUFFER BROWNING - BUFFER
5 Stars
(5.0)

$1.75

In stock
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Product badge HOWA - 1500 BARRELED MINI ACTIONS 6MM ARC HOWA - 1500 BARRELED MINI ACTIONS 6MM ARC
5 Stars
(4.5)

$430.99 - $448.99

$530.77 - $552.31

Online Only - In stock
Product badge ZERMATT ARMS - TL3 SHORT ACTION RECEIVER ZERMATT ARMS - TL3 SHORT ACTION RECEIVER
5 Stars
(5.0)

$1,300.00

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BROWNELLS BUNDLES - BRN-601 20" UPPER W/COLT AR-15 4x21MM OPTIC BROWNELLS BUNDLES - BRN-601 20" UPPER W/COLT AR-15 4x21MM OPTIC
5 Stars
(0.0)

$1,058.99

In stock
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MAGPUL - ENHANCED EJECTION PORT COVERS FOR AR-15 MAGPUL - ENHANCED EJECTION PORT COVERS FOR AR-15
5 Stars
(4.1)

$16.10

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VOLQUARTSEN - RUGER® 10/22® BOLT RELEASE VOLQUARTSEN - RUGER® 10/22® BOLT RELEASE
5 Stars
(4.6)

$12.38

In stock
BROWNELLS - BRN-601® RETRO COMPLETE UPPER RECEIVER BROWNELLS - BRN-601® RETRO COMPLETE UPPER RECEIVER
5 Stars
(3.6)

$899.99

In stock
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Product badge HOWA - 1500 308 WINCHESTER HEAVY VARMINT THREADED BARRELED ACTION HOWA - 1500 308 WINCHESTER HEAVY VARMINT THREADED BARRELED ACTION
5 Stars
(4.9)

$448.99

$552.31

Online Only - In stock
BROWNELLS - AR-15/M16 DETENT TAKEDOWN SPRINGS BROWNELLS - AR-15/M16 DETENT TAKEDOWN SPRINGS
5 Stars
(5.0)

$0.99 - $2.99

In stock
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Product badge HOWA - M1500 300 AAC BLACKOUT HEAVY THREADED BARREL MINI ACTION HOWA - M1500 300 AAC BLACKOUT HEAVY THREADED BARREL MINI ACTION
5 Stars
(5.0)

$460.99

$567.69

Online Only - In stock
VOLQUARTSEN - 10/22® SOCKET HEAD TAKEDOWN SCREW VOLQUARTSEN - 10/22® SOCKET HEAD TAKEDOWN SCREW
5 Stars
(3.4)

$6.08

In stock
CMMG - AR-15 Ejection Cover Hinge Pin Snap Ring CMMG - AR-15 Ejection Cover Hinge Pin Snap Ring
5 Stars
(5.0)

$1.38

In stock
CMMG - AR-15 PIVOT PIN DETENTS CMMG - AR-15 PIVOT PIN DETENTS
5 Stars
(5.0)

$10.00

In stock
LMT DEFENSE - MARS-L SOPMOD COMPLETE LOWER RECEIVER LMT DEFENSE - MARS-L SOPMOD COMPLETE LOWER RECEIVER
5 Stars
(4.7)

$969.30

Online Only - In stock
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Product badge HOWA - M1500 MINI 22 ARC BARRELED ACTION HOWA - M1500 MINI 22 ARC BARRELED ACTION
5 Stars
(5.0)

$428.99 - $853.99

$530.77 - $1,060.00

Online Only - In stock
FORWARD CONTROLS DESIGN LLC - AR-15 BUFFER RETAINER STAINLESS STEEL FORWARD CONTROLS DESIGN LLC - AR-15 BUFFER RETAINER STAINLESS STEEL
5 Stars
(5.0)

$7.60

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

$26.99

$31.00

In stock
RUGER - TAKE DOWN SCREW RUGER - TAKE DOWN SCREW
5 Stars
(4.5)

$7.99

In stock
BROWNELLS BUNDLES - GAU-5A COMPLETE UPPER RECEIVER & 4X RETRO CARRY HANDLE SCOPE BROWNELLS BUNDLES - GAU-5A COMPLETE UPPER RECEIVER & 4X RETRO CARRY HANDLE SCOPE
5 Stars
(0.0)

$977.99 - $997.99

Select Items In Stock
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Product badge HOWA - M1500 6.5 CREEDMOOR 16.25" BARRELED ACTION HOWA - M1500 6.5 CREEDMOOR 16.25" BARRELED ACTION
5 Stars
(5.0)

$460.99

$567.69

Online Only - In stock
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Product badge HOWA - 1500 308 WIN 20" THREADED HEAVY BARRELED ACTION HOWA - 1500 308 WIN 20" THREADED HEAVY BARRELED ACTION
5 Stars
(4.7)

$448.99

$552.31

Online Only - In stock
LMT DEFENSE - MRP-L M-LOK SPECWAR 5.56MM ASSEMBLED UPPER RECEIVER LMT DEFENSE - MRP-L M-LOK SPECWAR 5.56MM ASSEMBLED UPPER RECEIVER
5 Stars
(5.0)

$940.50

In stock
Product badge
Product badge HOWA - M1500 6.5 CREEDMOOR STANDARD BARRELED ACTION HOWA - M1500 6.5 CREEDMOOR STANDARD BARRELED ACTION
5 Stars
(4.9)

$430.99 - $521.00

$530.77

Select Items In Stock
CMMG - AR-15 BOLT CATCH CMMG - AR-15 BOLT CATCH
5 Stars
(5.0)

$8.62 - $10.00

In stock
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AMERICAN DEFENSE MANUFACTURING - UIC-180 STRIPPED LOWER AMBIDEXTROUS RECEIVER AMERICAN DEFENSE MANUFACTURING - UIC-180 STRIPPED LOWER AMBIDEXTROUS RECEIVER
5 Stars
(5.0)
Add to cart to see price

Online Only - In stock
BROWNELLS - AR-15 C7 STRIPPED UPPER RECEIVER BROWNELLS - AR-15 C7 STRIPPED UPPER RECEIVER
5 Stars
(3.8)

$149.99

In stock
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Product badge HOWA - M1500 MINI 6.5 GRENDEL CARBON FIBER BARRELED ACTION HOWA - M1500 MINI 6.5 GRENDEL CARBON FIBER BARRELED ACTION
5 Stars
(5.0)

$835.99

$1,060.00

Online Only - In stock
LUTH-AR LLC - AR-15 TEAR DROP FORWARD ASSIST ASSEMBLY LUTH-AR LLC - AR-15 TEAR DROP FORWARD ASSIST ASSEMBLY
5 Stars
(4.6)

$18.49

In stock
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Product badge HOWA - M1500 308 WINCHESTER 16.25" HEAVY THREADED BARRELED ACTION HOWA - M1500 308 WINCHESTER 16.25" HEAVY THREADED BARRELED ACTION
5 Stars
(4.9)

$460.99

$567.69

Online Only - In stock
CMMG - AR-15 BOLT CATCH SPRING CMMG - AR-15 BOLT CATCH SPRING
5 Stars
(5.0)

$1.32

In stock
Product badge GEISSELE AUTOMATICS LLC - SUPER DUTY TAKEDOWN PIN SET GEISSELE AUTOMATICS LLC - SUPER DUTY TAKEDOWN PIN SET
5 Stars
(5.0)

$15.99

$19.00

In stock
COLT - AR15A4 TAKEDOWN PIN SPRING COLT - AR15A4 TAKEDOWN PIN SPRING
5 Stars
(5.0)

$2.19

In stock
BROWNELLS - GAU-5A 12.7" 1-12 UPPER RECEIVERS BROWNELLS - GAU-5A 12.7" 1-12 UPPER RECEIVERS
5 Stars
(0.0)

$736.69 - $985.99

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CMMG - AR-15 PIVOT PIN DETENT SPRING CMMG - AR-15 PIVOT PIN DETENT SPRING
5 Stars
(5.0)

$1.03

In stock
LMT DEFENSE - MARS-L STRIPPED LOWER RECEIVER LMT DEFENSE - MARS-L STRIPPED LOWER RECEIVER
5 Stars
(0.0)

$352.35

Online Only - In stock
Product badge BROWNELLS BUNDLES - DD 14.5" M4A1 SOMCOM UPPER RECEIVER W/ EOTECH OPTIC BROWNELLS BUNDLES - DD 14.5" M4A1 SOMCOM UPPER RECEIVER W/ EOTECH OPTIC
5 Stars
(0.0)

$1,263.99 - $1,402.99

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BROWNELLS BUNDLES - XM177E2 11.5"\ W/COLT OPTIC BROWNELLS BUNDLES - XM177E2 11.5"\ W/COLT OPTIC
5 Stars
(0.0)

$1,010.99

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BRAVO COMPANY - AR-15 COMPLETE WIDEBODY LOWER W/MK2RMS-M1T0 & MOD-2-SOPMOD STOCK BRAVO COMPANY - AR-15 COMPLETE WIDEBODY LOWER W/MK2RMS-M1T0 & MOD-2-SOPMOD STOCK
5 Stars
(4.6)

$559.00

Select Items In Stock
Product badge GEISSELE AUTOMATICS LLC - ULTRA DUTY CHECKERED TAKEDOWN PIN SET GEISSELE AUTOMATICS LLC - ULTRA DUTY CHECKERED TAKEDOWN PIN SET
5 Stars
(0.0)

$23.99

$28.00

In stock
COLT - AR15A4 BOLT CATCH PLUNGER COLT - AR15A4 BOLT CATCH PLUNGER
5 Stars
(5.0)

$2.19

In stock
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Product badge HOWA - M1500 6.5 PRC LA THREADED BARRELED ACTION HOWA - M1500 6.5 PRC LA THREADED BARRELED ACTION
5 Stars
(4.3)

$430.99 - $485.99

$530.77 - $598.46

Online Only - In stock
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Product badge HOWA - M1500 223 REMINGTON 20" HEAVY THREADED BARRELED MINI ACTION HOWA - M1500 223 REMINGTON 20" HEAVY THREADED BARRELED MINI ACTION
5 Stars
(4.0)

$442.99

$552.31

Online Only - In stock
BROWNELLS - AR-15 A1 EJECTION PORT COVER ASSEMBLY BROWNELLS - AR-15 A1 EJECTION PORT COVER ASSEMBLY
5 Stars
(4.4)

$13.99

In stock
SONS OF LIBERTY GUN WORKS - EAST INDIA 5.56X45 ASSEMBLED UPPER RECEIVER STARTER KIT FOR AR15 SONS OF LIBERTY GUN WORKS - EAST INDIA 5.56X45 ASSEMBLED UPPER RECEIVER STARTER KIT FOR AR15
5 Stars
(4.3)
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Product badge GEISSELE AUTOMATICS LLC - AR-15 SUPER DUTY STRIPPED UPPER RECEIVERS 5.56MM GEISSELE AUTOMATICS LLC - AR-15 SUPER DUTY STRIPPED UPPER RECEIVERS 5.56MM
5 Stars
(5.0)

$881.99 - $988.99

$1,025.00 - $1,150.00

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CMMG - AR-15 BOLT CATCH PLUNGER CMMG - AR-15 BOLT CATCH PLUNGER
5 Stars
(5.0)

$1.86

In stock
CMMG - AR-15 EJECTION PORT COVER KIT CMMG - AR-15 EJECTION PORT COVER KIT
5 Stars
(5.0)

$9.54

In stock
DEWEY - AR-15/M16 TAKE DOWN PIN DEWEY - AR-15/M16 TAKE DOWN PIN
5 Stars
(5.0)

$6.99

In stock
Products:  33  –  64  of 649