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Rifle Lower & Upper Parts Kits

47 Items

Rifle Lower & Upper Parts Kits Up To 20% Off— 47 Products In Stock / 6 Models

Our Rifle Lower & Upper Parts Kits lineup includes 47 in-stock products selected from the brands serious shooters and outdoorsmen rely on. Enjoy savings Up To 20% 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:  65  –  89  of 89
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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)

$129.99 - $133.99

$153.00 - $158.00

In stock
NEXT LEVEL ARMAMENT - MIL-SPEC LOWER PARTS KIT FOR AR-15 NEXT LEVEL ARMAMENT - MIL-SPEC LOWER PARTS KIT FOR AR-15
5 Stars
(0.0)

$63.00

In stock
Product badge CMMG - AR-15/M16 LOWER SPRING KIT CMMG - AR-15/M16 LOWER SPRING KIT
5 Stars
(4.3)

$10.99

$12.49

In stock
Product badge CMMG - GUNBUILDER'S LOWER PARTS KIT FOR AR-15 LOWER CMMG - GUNBUILDER'S LOWER PARTS KIT FOR AR-15 LOWER
5 Stars
(4.6)

$31.99

$34.99

In stock
DANIEL DEFENSE - AR-15 LOWER PARTS KIT DANIEL DEFENSE - AR-15 LOWER PARTS KIT
5 Stars
(4.8)

$122.00

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

$44.99

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

$51.99

$62.00

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

$150.30 - $333.00

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

$15.99

$18.85

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
BROWNELLS BUNDLES - BRN-180 LOWER PARTS KIT BROWNELLS BUNDLES - BRN-180 LOWER PARTS KIT
5 Stars
(5.0)

$115.58

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

$39.99

$49.23

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

$39.99 - $52.99

Select Items 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
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
WILSON COMBAT - AR-15 RECEIVER SMALL PARTS KIT WILSON COMBAT - AR-15 RECEIVER SMALL PARTS KIT
5 Stars
(4.5)

$51.95

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
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
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

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

$38.99

In stock
Product badge CMMG - AR-15/M16 ENHANCED REPAIR KIT CMMG - AR-15/M16 ENHANCED REPAIR KIT
5 Stars
(5.0)

$29.99

$36.92

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

$55.92

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

$9.99

In stock
FIGHTLITE INDUSTRIES - MCR BOLT REHAB KIT FIGHTLITE INDUSTRIES - MCR BOLT REHAB KIT
5 Stars
(0.0)

$131.99

In stock
M & P - M&P AR-15 CUSTOMIZABLE LOWER PARTS KIT M & P - M&P AR-15 CUSTOMIZABLE LOWER PARTS KIT
5 Stars
(4.3)

$37.99

In stock
Product badge CMMG - UPPER SMALL PARTS KIT FOR AR-15/M16 CMMG - UPPER SMALL PARTS KIT FOR AR-15/M16
5 Stars
(0.0)

$10.99

$13.54

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

$25.99

$28.46

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
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

Select Items In Stock
STERN DEFENSE, LLC - MAG-AD EJECTOR REPLACEMENT KIT STERN DEFENSE, LLC - MAG-AD EJECTOR REPLACEMENT KIT
5 Stars
(5.0)

$9.00

In stock
Product badge CMMG - 308 AR MK3 BOLT REHAB KIT CMMG - 308 AR MK3 BOLT REHAB KIT
5 Stars
(0.0)

$51.99

$64.62

In stock
BATTLE ARMS DEVELOPMENT INC. - AR-15 ENHANCED PIVOT & TAKEDOWN PINS BATTLE ARMS DEVELOPMENT INC. - AR-15 ENHANCED PIVOT & TAKEDOWN PINS
5 Stars
(0.0)

$28.95

In stock
Product badge CMMG - 22 ARC SPRING KIT CMMG - 22 ARC SPRING KIT
5 Stars
(0.0)

$9.99

$12.31

In stock
ARMASPEC - AR-15 STAINLESS LOWER PARTS KITS .223/5.56 ARMASPEC - AR-15 STAINLESS LOWER PARTS KITS .223/5.56
5 Stars
(3.5)

$71.99

In stock
BATTLE ARMS DEVELOPMENT INC. - AR-15 INVESTMENT CAST COMPLETE ENHANCED LOWER PARTS KIT BATTLE ARMS DEVELOPMENT INC. - AR-15 INVESTMENT CAST COMPLETE ENHANCED LOWER PARTS KIT
5 Stars
(5.0)

$131.95

In stock
Product badge CMMG - BOLT REHAB KIT FOR AR-15/M16 CMMG - BOLT REHAB KIT FOR AR-15/M16
5 Stars
(3.0)

$31.99

$38.08

In stock
NEXT LEVEL ARMAMENT - NLX PERFORMANCE KIT 1 FOR AR-15 NEXT LEVEL ARMAMENT - NLX PERFORMANCE KIT 1 FOR AR-15
5 Stars
(0.0)

$128.00

In stock
SAKO - SAKO TRG M10 RECEIVER PARTS SET SAKO - SAKO TRG M10 RECEIVER PARTS SET
5 Stars
(0.0)

$108.99

In stock
RISE ARMAMENT - ENHANCED TAKEDOWN AND PIVOT PINS FOR AR-15 RISE ARMAMENT - ENHANCED TAKEDOWN AND PIVOT PINS FOR AR-15
5 Stars
(0.0)

$22.99

In stock
RISE ARMAMENT - AR-15 UPPER RECEIVER PARTS KIT RISE ARMAMENT - AR-15 UPPER RECEIVER PARTS KIT
5 Stars
(0.0)

$34.99

Out of Stock
Product badge CMMG - AR-15 SURVIVAL KIT CMMG - AR-15 SURVIVAL KIT
5 Stars
(4.0)

$51.99

$62.31

Out of Stock
Product badge COLT - .223 REM/.5.56MM NATO HIGH WEAR PARTS KIT FOR AR-15/M4 COLT - .223 REM/.5.56MM NATO HIGH WEAR PARTS KIT FOR AR-15/M4
5 Stars
(0.0)

$23.00

Out of Stock
AERO PRECISION - AR-15 UPPER PARTS KIT AERO PRECISION - AR-15 UPPER PARTS KIT
5 Stars
(4.8)

$20.99

Out of Stock
AERO PRECISION - LOWER PARTS KIT NO FCG/ PISTOL GRIP/ TRIGGERGUARD FOR AR-15 AERO PRECISION - LOWER PARTS KIT NO FCG/ PISTOL GRIP/ TRIGGERGUARD FOR AR-15
5 Stars
(4.3)

$32.99

Out of Stock
AERO PRECISION - AR-15/M5 FIX-IT KIT AERO PRECISION - AR-15/M5 FIX-IT KIT
5 Stars
(4.9)

$17.99

Out of Stock
AERO PRECISION - M5 LOWER PARTS KIT W/NO FCG OR PISTOL GRIP FOR AR-308 AERO PRECISION - M5 LOWER PARTS KIT W/NO FCG OR PISTOL GRIP FOR AR-308
5 Stars
(4.2)

$47.99

Out of Stock
AERO PRECISION - AR15/M4E1 FIELD REPAIR KIT AERO PRECISION - AR15/M4E1 FIELD REPAIR KIT
5 Stars
(4.9)

$16.99

Out of Stock
AERO PRECISION - M4E1 LOWER PARTS KITS W/MOE GRIP FOR AR-15 AERO PRECISION - M4E1 LOWER PARTS KITS W/MOE GRIP FOR AR-15
5 Stars
(4.6)

$89.99

Out of Stock
RUGER - 10/22® RECEIVER PARTS KIT LESS TRIGGER RUGER - 10/22® RECEIVER PARTS KIT LESS TRIGGER
5 Stars
(3.4)

$53.99

Out of Stock
AERO PRECISION - EPC LOWER PARTS KIT W/NO FCG, GRIP OR TRIGGER GUARD FOR AR-15 AERO PRECISION - EPC LOWER PARTS KIT W/NO FCG, GRIP OR TRIGGER GUARD FOR AR-15
5 Stars
(4.0)

$35.99

Out of Stock
COLT - LOWER RECEIVER PARTS KIT COLT - LOWER RECEIVER PARTS KIT
5 Stars
(4.4)

$119.99

Out of Stock
ALG DEFENSE - AR-15 LOWER PARTS KIT W/ QMS TRIGGER ALG DEFENSE - AR-15 LOWER PARTS KIT W/ QMS TRIGGER
5 Stars
(4.6)

$93.00 - $96.00

Out of Stock
ALG DEFENSE - AR-15 LOWER PARTS KIT W/ ACT TRIGGER ALG DEFENSE - AR-15 LOWER PARTS KIT W/ ACT TRIGGER
5 Stars
(4.8)

$112.99 - $113.00

Out of Stock
AERO PRECISION - LOWER PARTS KITS W/ MOE GRIP FOR AR-15 AERO PRECISION - LOWER PARTS KITS W/ MOE GRIP FOR AR-15
5 Stars
(4.3)

$98.99

Out of Stock
RUGER - 10/22® RECEIVER PARTS KIT RUGER - 10/22® RECEIVER PARTS KIT
5 Stars
(5.0)

$128.99

Out of Stock
AERO PRECISION - M5 LOWER PARTS KIT W/MOE SL GRIP NO FCG FOR AR-308 AERO PRECISION - M5 LOWER PARTS KIT W/MOE SL GRIP NO FCG FOR AR-308
5 Stars
(5.0)

$69.99

Out of Stock
AERO PRECISION - M5 LOWER PARTS KIT W/MOE GRIP NO FCG FOR AR-308 AERO PRECISION - M5 LOWER PARTS KIT W/MOE GRIP NO FCG FOR AR-308
5 Stars
(5.0)

$65.99

Out of Stock
AERO PRECISION - LOWER PARTS KITS W/MOE SL GRIP, NO FIRE CONTROL GROUP FOR AR15 AERO PRECISION - LOWER PARTS KITS W/MOE SL GRIP, NO FIRE CONTROL GROUP FOR AR15
5 Stars
(5.0)

$57.99 - $59.99

Out of Stock
AERO PRECISION - LOWER PARTS KITS W/MOE GRIP, NO FIRE CONTROL GROUP FOR AR-15 AERO PRECISION - LOWER PARTS KITS W/MOE GRIP, NO FIRE CONTROL GROUP FOR AR-15
5 Stars
(3.3)

$58.99

Out of Stock
AERO PRECISION - M4E1 LOWER PARTS KITS W/MOE GRIP, NO FCG FOR AR-15 AERO PRECISION - M4E1 LOWER PARTS KITS W/MOE GRIP, NO FCG FOR AR-15
5 Stars
(5.0)

$54.99

Out of Stock
Product badge GEISSELE AUTOMATICS LLC - AR-15 MIL-SPEC LOWER PARTS KIT W/ GRIP, NO TRIGGER GEISSELE AUTOMATICS LLC - AR-15 MIL-SPEC LOWER PARTS KIT W/ GRIP, NO TRIGGER
5 Stars
(4.0)

$51.99

$68.00

Out of Stock
BROWNELLS - AR-15/M16 BOLT CARRIER COMPLETION KIT BROWNELLS - AR-15/M16 BOLT CARRIER COMPLETION KIT
5 Stars
(3.7)

$46.99

Out of Stock
AERO PRECISION - LOWER PARTS KITS W/ MOE SL GRIP FOR AR-15 AERO PRECISION - LOWER PARTS KITS W/ MOE SL GRIP FOR AR-15
5 Stars
(5.0)

$97.99 - $109.99

Out of Stock
AERO PRECISION - M5 LOWER PARTS KIT W/MOE GRIP FOR AR-308 AERO PRECISION - M5 LOWER PARTS KIT W/MOE GRIP FOR AR-308
5 Stars
(4.5)

$104.99

Out of Stock
AERO PRECISION - EPC LOWER PARTS KIT WITH MOE GRIP FOR AR-15 AERO PRECISION - EPC LOWER PARTS KIT WITH MOE GRIP FOR AR-15
5 Stars
(4.0)

$89.99

Out of Stock
AERO PRECISION - M4E1 LOWER PARTS KITS W/MOE SL GRIP, NO FCG FOR AR-15 AERO PRECISION - M4E1 LOWER PARTS KITS W/MOE SL GRIP, NO FCG FOR AR-15
5 Stars
(5.0)

$54.99

Out of Stock
AERO PRECISION - AR .308 UPPER PARTS KIT AERO PRECISION - AR .308 UPPER PARTS KIT
5 Stars
(5.0)

$22.99

Out of Stock
AERO PRECISION - ENHANCED LOWER PARTS KIT W/MOE GRIP & TRIGGER GUARD FOR AR-15 AERO PRECISION - ENHANCED LOWER PARTS KIT W/MOE GRIP & TRIGGER GUARD FOR AR-15
5 Stars
(5.0)

$114.99

Out of Stock
AERO PRECISION - M5 LOWER PARTS KIT W/MOE SL GRIP FOR AR-308 AERO PRECISION - M5 LOWER PARTS KIT W/MOE SL GRIP FOR AR-308
5 Stars
(5.0)

$104.99

Out of Stock
AERO PRECISION - M4E1 LOWER PARTS KITS W/ MOE SL GRIP, NO TRIGGER GUARD FOR AR-15 AERO PRECISION - M4E1 LOWER PARTS KITS W/ MOE SL GRIP, NO TRIGGER GUARD FOR AR-15
5 Stars
(5.0)

$94.99

Out of Stock
AERO PRECISION - M5 FIELD REPAIR KIT FOR AR-308 AERO PRECISION - M5 FIELD REPAIR KIT FOR AR-308
5 Stars
(5.0)

$17.99

Out of Stock
KNIGHT'S ARMAMENT - SR-15/SR-16 FIELD REPAIR KIT KNIGHT'S ARMAMENT - SR-15/SR-16 FIELD REPAIR KIT
5 Stars
(0.0)

$165.39

Out of Stock
Product badge COLT - .223 REM/.5.56MM NATO LOWER RECEIVER PARTS KIT FOR AR-15 COLT - .223 REM/.5.56MM NATO LOWER RECEIVER PARTS KIT FOR AR-15
5 Stars
(0.0)

$112.00

Out of Stock
NEXT LEVEL ARMAMENT - NLX PERFORMANCE KIT 2 FOR AR-15 NEXT LEVEL ARMAMENT - NLX PERFORMANCE KIT 2 FOR AR-15
5 Stars
(0.0)

$105.00

Out of Stock
BROWNELLS BUNDLES - AR-15 UPPER RECEIVER COMPLETION KIT BROWNELLS BUNDLES - AR-15 UPPER RECEIVER COMPLETION KIT
5 Stars
(0.0)

$62.34

Out of Stock
Product badge COLT - COLT .223 REM/.5.56MM NATO BOLT REPAIR KIT FOR AR-15/M4 COLT - COLT .223 REM/.5.56MM NATO BOLT REPAIR KIT FOR AR-15/M4
5 Stars
(0.0)

$42.00

Out of Stock
KAK INDUSTRY LLC. - AR-15 LOWER PARTS BASIC BUILD KIT KAK INDUSTRY LLC. - AR-15 LOWER PARTS BASIC BUILD KIT
5 Stars
(0.0)

$24.99

Out of Stock
Product badge COLT - .223 REM/.5.56MM NATO BOLT REPAIR KIT FOR AR-15/M4 COLT - .223 REM/.5.56MM NATO BOLT REPAIR KIT FOR AR-15/M4
5 Stars
(0.0)

$17.00

Out of Stock
KAK INDUSTRY LLC. - AR-15 BOLT CARRIER COMPLETION KIT KAK INDUSTRY LLC. - AR-15 BOLT CARRIER COMPLETION KIT
5 Stars
(0.0)

$12.56 - $15.99

Out of Stock
KAK INDUSTRY LLC. - AR-15 MISSING PARTS KIT FOR LOWER RECEIVER KAK INDUSTRY LLC. - AR-15 MISSING PARTS KIT FOR LOWER RECEIVER
5 Stars
(0.0)

$8.99

Out of Stock
BROWNELLS - AR-15/M16 SMALL PARTS KIT BROWNELLS - AR-15/M16 SMALL PARTS KIT
5 Stars
(5.0)

 

No longer available
Products:  65  –  89  of 89