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Rifle Lower & Upper Parts Kits

40 Items

Rifle Lower & Upper Parts Kits Up To 17% Off— 40 Products In Stock / 6 Models

Our Rifle Lower & Upper Parts Kits lineup includes 40 in-stock products selected from the brands serious shooters and outdoorsmen rely on. Enjoy savings Up To 17% Off on qualifying orders, all protected by our Forever Guarantee®.

You'll find options across Lower Parts Kits, Repair Parts Kits, Rifle Parts Kits, & Upper Parts Kits from 26 premium brands like AERO PRECISION, CMMG, COLT, RISE ARMAMENT, with detailed specs to help you compare quality, materials, and performance. Verified buyers give our Rifle Lower & Upper Parts Kits 4.4 Ratings out of 429 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 Lower & Upper Parts Kits product we ship. Visit our full Rifle Parts category for the complete selection of related gear.

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Products:  1  –  32  of 88
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CMMG - GUNBUILDER'S LOWER PARTS KIT FOR AR-15 LOWER CMMG - GUNBUILDER'S LOWER PARTS KIT FOR AR-15 LOWER
5 Stars
(4.6)

$34.99

In stock
SONS OF LIBERTY GUN WORKS - BLASTER LOWER PARTS STARTER KIT FOR AR-15 SONS OF LIBERTY GUN WORKS - BLASTER LOWER PARTS STARTER KIT FOR AR-15
5 Stars
(4.7)

$69.99

In stock
RISE ARMAMENT - AR-15 LOWER RECEIVER PARTS KIT RISE ARMAMENT - AR-15 LOWER RECEIVER PARTS KIT
5 Stars
(4.7)

$44.99

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

$153.00 - $158.00

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CMMG - AR-15/M16 LOWER SPRING KIT CMMG - AR-15/M16 LOWER SPRING KIT
5 Stars
(4.3)

$12.49

In stock
Product badge M & P - M&P AR-15 COMPLETE UPPER PARTS KIT M & P - M&P AR-15 COMPLETE UPPER PARTS KIT
5 Stars
(5.0)

$21.51

$25.99

In stock
CMMG - AR-15 LOWER PARTS KIT CMMG - AR-15 LOWER PARTS KIT
5 Stars
(4.1)

$56.99

In stock
BROWNELLS - AR-15/M16 ARMORER'S SMALL PARTS KIT BROWNELLS - AR-15/M16 ARMORER'S SMALL PARTS KIT
5 Stars
(4.0)

$599.99

In stock
BRAVO COMPANY - AR-15 BCMGUNFIGHTER™ ENHANCED LOWER PARTS KITS BRAVO COMPANY - AR-15 BCMGUNFIGHTER™ ENHANCED LOWER PARTS KITS
5 Stars
(4.5)

$119.95

In stock
LMT DEFENSE - LMT .308 LOWER PARTS KIT LMT DEFENSE - LMT .308 LOWER PARTS KIT
5 Stars
(5.0)

$150.30 - $333.00

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GEISSELE AUTOMATICS LLC - AR-15 LOWER PARTS KIT GEISSELE AUTOMATICS LLC - AR-15 LOWER PARTS KIT
5 Stars
(3.5)

$62.00

In stock
RISE ARMAMENT - PREMIUM LOWER RECEIVER PARTS KIT FOR AR-15 RISE ARMAMENT - PREMIUM LOWER RECEIVER PARTS KIT FOR AR-15
5 Stars
(0.0)

$129.99

In stock
CMMG - AR-15 PARTS KIT HD PIVOT & TAKEDOWN PINS CMMG - AR-15 PARTS KIT HD PIVOT & TAKEDOWN PINS
5 Stars
(4.9)

$18.85

In stock
CMMG - AR-15 SURVIVAL KIT CMMG - AR-15 SURVIVAL KIT
5 Stars
(4.0)

$62.31

In stock
M & P - M&P AR ESSENTIALS KIT M & P - M&P AR ESSENTIALS KIT
5 Stars
(0.0)

$9.99

In stock
WILSON COMBAT - AR-15 RECEIVER SMALL PARTS KIT WILSON COMBAT - AR-15 RECEIVER SMALL PARTS KIT
5 Stars
(4.5)

$51.95

In stock
LMT DEFENSE - LMT 5.56MM LOWER PARTS KIT LMT DEFENSE - LMT 5.56MM LOWER PARTS KIT
5 Stars
(0.0)

$141.30 - $322.65

In stock
STRIKE INDUSTRIES - AR ENHANCED LOWER RECEIVER PARTS KIT STRIKE INDUSTRIES - AR ENHANCED LOWER RECEIVER PARTS KIT
5 Stars
(4.1)

$75.95

In stock
RISE ARMAMENT - OH SH#T SPARE PARTS KIT FOR AR-15 RISE ARMAMENT - OH SH#T SPARE PARTS KIT FOR AR-15
5 Stars
(5.0)

$15.99

In stock
SONS OF LIBERTY GUN WORKS - BLASTER GUTS LOWER PARTS KIT W/LIBERTY FIGHTING TRIGGER FOR AR15 SONS OF LIBERTY GUN WORKS - BLASTER GUTS LOWER PARTS KIT W/LIBERTY FIGHTING TRIGGER FOR AR15
5 Stars
(5.0)

$120.00

In stock
CMMG - AR-15/M16 22LR BOLT REHAB KIT CMMG - AR-15/M16 22LR BOLT REHAB KIT
5 Stars
(5.0)

$28.46

In stock
Product badge KNIGHT'S ARMAMENT - FIELD REPAIR KIT FOR SR-25 E2 MOD 1 BOLT KNIGHT'S ARMAMENT - FIELD REPAIR KIT FOR SR-25 E2 MOD 1 BOLT
5 Stars
(0.0)

$242.86

In stock
LUTH-AR LLC - AR-15 A3 UPPER RECEIVER PARTS KIT LUTH-AR LLC - AR-15 A3 UPPER RECEIVER PARTS KIT
5 Stars
(3.8)

$16.49

In stock
LUTH-AR LLC - AR-15 BUILDER KIT LUTH-AR LLC - AR-15 BUILDER KIT
5 Stars
(3.6)

$38.99

In stock
LUTH-AR LLC - AR-308 LOWER PARTS KIT LUTH-AR LLC - AR-308 LOWER PARTS KIT
5 Stars
(3.0)
Add to cart to see price

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STERN DEFENSE, LLC - MAG-AD EJECTOR REPLACEMENT KIT STERN DEFENSE, LLC - MAG-AD EJECTOR REPLACEMENT KIT
5 Stars
(5.0)

$9.00

In stock
STRIKE INDUSTRIES - AR-15/M16 LOWER RECEIVER GUNSMITH SPRING KIT STRIKE INDUSTRIES - AR-15/M16 LOWER RECEIVER GUNSMITH SPRING KIT
5 Stars
(3.0)

$8.95 - $95.95

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ZRO DELTA - AR-15 ELG LOWER PARTS KIT ZRO DELTA - AR-15 ELG LOWER PARTS KIT
5 Stars
(3.9)

$39.99 - $52.99

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LUTH-AR LLC - AR-15 LOWER PARTS KIT LUTH-AR LLC - AR-15 LOWER PARTS KIT
5 Stars
(4.6)

$55.92

In stock
ARMASPEC - AR-15 GUN BUILDERS LOWER PARTS KITS STAINLESS .223/5.56 ARMASPEC - AR-15 GUN BUILDERS LOWER PARTS KITS STAINLESS .223/5.56
5 Stars
(3.6)

$67.49

In stock
CMMG - GUNBUILDER'S LOWER PARTS KIT FOR .308 AR LOWER CMMG - GUNBUILDER'S LOWER PARTS KIT FOR .308 AR LOWER
5 Stars
(3.0)

$49.23

In stock
BATTLE ARMS DEVELOPMENT INC. - AR-15 INVESTMENT CAST ENHANCED LOWER PARTS KIT BATTLE ARMS DEVELOPMENT INC. - AR-15 INVESTMENT CAST ENHANCED LOWER PARTS KIT
5 Stars
(4.0)

$34.95

In stock
Products:  1  –  32  of 88