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Daily Deal: Hornady A-Tip Match 6mm 110gr 500-ct - $367.99 $329.99 + FREE Hazmat!

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EXCLUSIVE DANIEL DEFENSE
MK18 & M4A1 STRIPPED UPPERS

RISII & RISIII Rails, Cold Hammer Forged Barrels
& Legendary Daniel Defense Quality
$749.99 This Week!
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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!
Save Up To 29% 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!
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SMALLER.
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Check-Out The New
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THE BETTER HALF
OF YOUR BRN-180®

Brownells BRN-180M
Fully Ambidextrous Lower
Back In Stock!
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BROWNELLS BRN-22

Precision, Reliability, and Customizable
Take A Deeper Dive

Rifle Receivers & Parts

319 Items

Rifle Receivers & Parts Up To 68% Off— 319 Products In Stock / 106 Models

Our Rifle Receivers & Parts lineup includes 319 in-stock products selected from the brands serious shooters and outdoorsmen rely on. Enjoy savings Up To 68% Off on qualifying orders, and all Brownells brand products backed by our Forever Guarantee®.

You'll find options across Upper Receivers, Rifle Barreled Actions, Bolt Catch Parts, & Ejection Port Covers & Parts from 90 premium brands like AERO PRECISION, BROWNELLS, HOWA, COLT, with detailed specs to help you compare quality, materials, and performance. Verified buyers give our Rifle Receivers & Parts 4.5 Ratings out of 3,105 Reviews from verified buyers, a strong signal you can shop with confidence.

Whether you are gearing up for the range, the field, or daily carry, we stand behind every Rifle Receivers & Parts product we ship. Visit our full Rifle Parts category for the complete selection of related gear.

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Products:  1  –  32  of 335
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Product badge
Product badge DANIEL DEFENSE - MK18 STRIPPED SOCOM UPPER RECEIVER DANIEL DEFENSE - MK18 STRIPPED SOCOM UPPER RECEIVER
5 Stars
(4.5)

$749.99

$899.99

In stock
Product badge
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

In stock
Product badge
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

In stock
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)

$1,525.00

Select Items In Stock
GEISSELE AUTOMATICS LLC - MARITIME BOLT CATCH FOR AR-15 GEISSELE AUTOMATICS LLC - MARITIME BOLT CATCH FOR AR-15
5 Stars
(4.5)

$31.00

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

$2.35 - $2.95

In stock
COLT - AR15A4 UPPER RCVR, FLATTOP, MOD. CARB COLT - AR15A4 UPPER RCVR, FLATTOP, MOD. CARB
5 Stars
(4.3)

$129.99

In stock
BRAVO COMPANY - COMPLETE LOWER RECEIVER W/ BCMGUNFIGHTER™ STOCK FOR AR-15 BRAVO COMPANY - COMPLETE LOWER RECEIVER W/ BCMGUNFIGHTER™ STOCK FOR AR-15
5 Stars
(4.7)

$470.00 - $525.00

Select Items In Stock
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)

$26.49

In stock
BRAVO COMPANY - LOWERS W/ MK2 RMS & MOD 0 SOPMOD STOCK BRAVO COMPANY - LOWERS W/ MK2 RMS & MOD 0 SOPMOD STOCK
5 Stars
(5.0)

$549.00 - $549.99

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

$1.32

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

$1.86

In stock
MAGPUL - ENHANCED EJECTION PORT COVERS FOR AR-15 MAGPUL - ENHANCED EJECTION PORT COVERS FOR AR-15
5 Stars
(4.0)

$11.49 - $12.99

Select Items 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
BROWNELLS - AR-15/M16 DETENT TAKEDOWN SPRINGS BROWNELLS - AR-15/M16 DETENT TAKEDOWN SPRINGS
5 Stars
(5.0)

$0.29 - $0.78

Select Items In Stock
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
(4.3)

$559.00

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

$10.00

In stock
ZRO DELTA - AR-15 FORGED M4 UPPER RECEIVER 5.56MM ZRO DELTA - AR-15 FORGED M4 UPPER RECEIVER 5.56MM
5 Stars
(5.0)

$69.99

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

$1.03

In stock
WILSON COMBAT - AR-15 EJECTION PORT COVER PARTS KIT ONLY WILSON COMBAT - AR-15 EJECTION PORT COVER PARTS KIT ONLY
5 Stars
(5.0)

$3.95

In stock
AMERICAN DEFENSE MANUFACTURING - AR-15 UIC STRIPPED LOWER AMBI RECEIVER AMERICAN DEFENSE MANUFACTURING - AR-15 UIC STRIPPED LOWER AMBI RECEIVER
5 Stars
(4.6)

$399.99

Online Only - In stock
BRAVO COMPANY - RECEIVERS W/ MK2 RMS & MOD-1 SOPMOD STOCK BRAVO COMPANY - RECEIVERS W/ MK2 RMS & MOD-1 SOPMOD STOCK
5 Stars
(5.0)

$563.00

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
BRAVO COMPANY - LOWER RECEIVERS W/ MK 2 RMS & MOD-0 STOCK BRAVO COMPANY - LOWER RECEIVERS W/ MK 2 RMS & MOD-0 STOCK
5 Stars
(4.6)

$549.00 - $599.99

Online Only - In stock
COLT - M4 5.56 COMPLETE MONOLITHIC UPPER RECEIVER GROUPS COLT - M4 5.56 COMPLETE MONOLITHIC UPPER RECEIVER GROUPS
5 Stars
(4.7)

$949.99 - $1,059.00

Select Items 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
Product badge FAXON FIREARMS - ENHANCED FORGED STRIPPED UPPER RECEIVER FAXON FIREARMS - ENHANCED FORGED STRIPPED UPPER RECEIVER
5 Stars
(0.0)

$82.99

$91.99

In stock
CMMG - AR-15 PIVOT PIN DETENT SPRING CMMG - AR-15 PIVOT PIN DETENT SPRING
5 Stars
(4.8)

$1.03

In stock
BRAVO COMPANY - AR-15 COMPLETE WIDEBODY LOWER RECEIVER WITH MOD-2-SOPMOD STOCK BRAVO COMPANY - AR-15 COMPLETE WIDEBODY LOWER RECEIVER WITH MOD-2-SOPMOD STOCK
5 Stars
(5.0)

$535.00

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

$9.54

In stock
COLT - BOLT CARRIER GAS KEY SCREW COLT - BOLT CARRIER GAS KEY SCREW
5 Stars
(4.0)

$2.39

In stock
LUTH-AR LLC - AR-15 EJECTION HINGE PIN SNAP RING LUTH-AR LLC - AR-15 EJECTION HINGE PIN SNAP RING
5 Stars
(5.0)

$1.39

In stock
Products:  1  –  32  of 335