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AR 15 Build Kits

Looking for AR 15 Build Kits? We have thousands of rifles, handguns, and shotguns in stock. If you don't find what you are looking for on this page, check out the categories listed on the left side for more guns, ammo, and accessories.

Need optics? We have everything from holographic sights for your rifle or pistol to sniper scopes for your long range gun. At Cheaper Than Dirt! we have the best prices, widest selection, and largest inventory of gun gear on the planet!

CMMG AR-15 Lower Parts Kit
ARR-0121
$59.97
IN STOCK at Warehouses
10,11,12,2,3,1,4,6,7
TAPCO AR-15 Commercial Receiver Extension Build Kit Aluminum Black ZAR09108
9-77449
$48.99
IN STOCK at Warehouses
2,1,9
TAPCO AR-15 Commercial Receiver Extension Build Kit Aluminum Black ZAR09108
2-TINZAR09108
$43.14
IN STOCK at Warehouses
2,1,9
MAG Tactical Systems Premium Upgraded AR-15 Complete Lower Parts Kit PLPK
2-MTSPLPK
$78.22
IN STOCK at Warehouse
2
DPMS Oracle 5.56 NATO / .223 Rem Complete AR-15 Rifle Kit KT-OC
8-DPMS-KTOC
$476.62
IN STOCK at Warehouses
2,8
AR-15 Lower Parts Kit Complete DPMS LPK
ARR-522
$59.97
IN STOCK at Warehouses
10,11,12,2,3,1,6,7,8
DPMS AR-15 Receiver Lower Parts Kit LPK
3-1023939
$67.03
IN STOCK at Warehouses
10,11,12,2,3,1,6,7,8
DPMS AR-15 Receiver Lower Parts Kit LPK
10-1023939
$67.03
IN STOCK at Warehouses
10,11,12,2,3,1,6,7,8
DPMS AR-15 Receiver Lower Parts Kit LPK
11-1023939
$67.03
IN STOCK at Warehouses
10,11,12,2,3,1,6,7,8
DPMS AR-15 Receiver Lower Parts Kit LPK
6-1023939
$67.03
IN STOCK at Warehouses
10,11,12,2,3,1,6,7,8
DPMS AR-15 Receiver Lower Parts Kit LPK
7-100395
$56.29
IN STOCK at Warehouses
10,11,12,2,3,1,6,7,8
DPMS AR-15 Receiver Lower Parts Kit LPK
12-1023939
$67.03
IN STOCK at Warehouses
10,11,12,2,3,1,6,7,8
DPMS AR-15 Receiver Lower Parts Kit LPK
2-DPLRPK1
$55.22
IN STOCK at Warehouses
10,11,12,2,3,1,6,7,8
DPMS AR-15 Receiver Lower Parts Kit  LPK
8-DPMS-LRPK1
$54.05
IN STOCK at Warehouses
10,11,12,2,3,1,6,7,8
AR-15 Matched Upper Build Kit with A3  T  Marked Upper, Bolt Carrier Group and Charging Handle , Black
ARR-654
$299.97
IN STOCK at Warehouse
1
Bushmaster AR-15 Standard Lower Parts Kit Mil Spec Black 93384
7-F1009693
$56.29
IN STOCK at Warehouse
7
DPMS Oracle 5.56 Complete Rifle Kit Minus the Stripped Lower
2-DPKT-OC
$461.94
IN STOCK at Warehouses
2,8
DPMS AP4 AR-15 Carbine Kit Complete Less Lower Reciever KT-AP4-LL
8-DPMS-KTAP4LL
$649.42
IN STOCK at Warehouses
2,8
DPMS AP4 AR-15 Carbine Kit Complete Less Lower Reciever KT-AP4-LL
2-DPKT-AP4-LL
$594.46
IN STOCK at Warehouses
2,8
TAPCO AR-15 Receiver Extension Tube Kit Commercial  ZAR09108
3-1031138
$53.81
IN STOCK at Warehouse
3
CMMG AR-15 Parts Kit Upper Pins and Springs 55AFF2F
8-CMMG-55AFF2F
$11.18
IN STOCK at Warehouses
7,8
CMMG AR-15 Parts Kit Upper Pins and Springs 55AFF2F
7-55AFF2F
$11.40
IN STOCK at Warehouses
7,8
Wheeler Delta Series AR-15 Armorer's Professional Kit 19 Piece 156555
7-156555
$150.65
IN STOCK at Warehouses
11,12,2,3,4,6,7,8,9
Wheeler Delta Series AR-15 Armorer's Professional Kit 19 Piece 156555
85624
$146.26
IN STOCK at Warehouses
11,12,2,3,4,6,7,8,9
Wheeler Delta Series AR-15 Armorer's Professional Kit 19 Piece 156555
6-1030385
$185.62
IN STOCK at Warehouses
11,12,2,3,4,6,7,8,9
Del-Ton AR-15 Semi Auto Rifle Kit .223 Rem/5.56 NATO 16  Barrel Lower Parts and Stock Kit Black RKT118
7-RKT118
$492.00
IN STOCK at Warehouse
7
Del-Ton AR-15 Complete Forged Lower Receiver with A2 Grip and Six Position Collapsible Stock Aluminum Black LR102T
7-GLR102T
$226.45
IN STOCK at Warehouse
7
Del-Ton AR-15 Complete Forged Lower Receiver with A2 Stock/Grip Aluminum Black LR102-F
7-GLR102F
$226.45
IN STOCK at Warehouse
7
Global Military Gear Ultra Light Weight Skeleton Stock Kit with Buffer and Spring Aluminum Black GM-LRESS10-F
2-GMG-LRESS10-F
$100.05
IN STOCK at Warehouse
2
Tactical Industries Target Master AR-15 .22 Conversion Kit 26 Round Black Dog Magazine Black Oxide Finish
ARR-590
$139.97
IN STOCK at Warehouse
1
DPMS Lite 16  AR-15 A3 Complete Rifle Kit Minus the Stripped Lower
2-DPKTA3-L16
$494.14
IN STOCK at Warehouse
2
TAPCO AR-15 Commercial Receiver Extension Tube Kit with Buffer Tube, Castle Nut, End Plate Sling Adaptor, Buffer and Recoil Spring Aluminum Black
ARR-957
$59.97
IN STOCK at Warehouses
2,1,9
Black Dawn AR-15 Lower Parts Kit BDR-LPK
9-100907
$109.00
IN STOCK at Warehouse
9
Max-ops H-K Type Hook Kit 1
7-28205
$7.54
IN STOCK at Warehouses
7,8
Bushmaster AR-15 Complete Lower Receiver Standard Trigger ACE Skeleton Rifle Stock Aluminum Black 92960
10-0135835
$366.83
IN STOCK at Warehouses
10,12,3,8
Wheeler Delta Series AR-15 Armorer's Professional Kit 19 Piece 156555
11-1030385
$185.62
IN STOCK at Warehouses
11,12,2,3,4,6,7,8,9
Wheeler Delta Series AR-15 Armorer's Professional Kit 19 Piece 156555
12-1030385
$185.62
IN STOCK at Warehouses
11,12,2,3,4,6,7,8,9
Wheeler Delta Series AR-15 Armorer's Professional Kit 19 Piece 156555
3-1030385
$185.62
IN STOCK at Warehouses
11,12,2,3,4,6,7,8,9
Wheeler Delta Series AR-15 Armorer's Professional Kit 19 Piece 156555
2-WH156555
$165.53
IN STOCK at Warehouses
11,12,2,3,4,6,7,8,9
Wheeler Delta Series AR-15 Armorer's Professional Kit 19 Piece 156555
8-WH-156555
$162.22
IN STOCK at Warehouses
11,12,2,3,4,6,7,8,9
Wheeler Delta Series AR-15 Armorer's Professional Kit 19 Piece 156555
9-109471
$151.43
IN STOCK at Warehouses
11,12,2,3,4,6,7,8,9
CMMG AR-15 Mid Length Gas Tube Kit with Pin Stainless Steel SIlver 55DA1EE
7-55DA1EE
$14.27
IN STOCK at Warehouse
7
CMMG AR-15 Rifle Length Gas Tube Kit with Pin Stainless Steel SIlver 55DA196
7-55DA196
$15.17
IN STOCK at Warehouse
7
Windham Weaponry AR-15 Lower Receiver Parts Kit KIT-LOWER-AR
8-WW-KITLOWERAR
$69.97
IN STOCK at Warehouses
4,8,9
Windham Weaponry AR-15 Lower Receiver Parts Kit KIT-LOWER-AR
9-102145
$66.08
IN STOCK at Warehouses
4,8,9
IO Inc Colt M16A1 Surplus Parts Kit with 100 Round Drum Magazine
8-IO-AR15100RDKIT
$344.94
IN STOCK at Warehouse
8
Wheeler AR-15 Delta Series Armorer's 7 Piece Essentials Kit with Carry Bag 156111
10-1212506
$92.71
IN STOCK at Warehouses
10,11,12,2,4,6,8,9
Wheeler AR-15 Delta Series Armorer's 7 Piece Essentials Kit with Carry Bag 156111
11-1212506
$92.71
IN STOCK at Warehouses
10,11,12,2,4,6,8,9
Wheeler AR-15 Delta Series Armorer's 7 Piece Essentials Kit with Carry Bag 156111
12-1212506
$92.71
IN STOCK at Warehouses
10,11,12,2,4,6,8,9
Wheeler AR-15 Delta Series Armorer's 7 Piece Essentials Kit with Carry Bag 156111
6-1212506
$92.71
IN STOCK at Warehouses
10,11,12,2,4,6,8,9
Wheeler AR-15 Delta Series Armorer's 7 Piece Essentials Kit with Carry Bag 156111
9-109466
$74.06
IN STOCK at Warehouses
10,11,12,2,4,6,8,9
Wheeler AR-15 Delta Series Armorer's 7 Piece Essentials Kit with Carry Bag 156111
8-WH-156111
$79.33
IN STOCK at Warehouses
10,11,12,2,4,6,8,9
Wheeler AR-15 Delta Series Armorer's 7 Piece Essentials Kit with Carry Bag 156111
2-WH156111
$80.94
IN STOCK at Warehouses
10,11,12,2,4,6,8,9
Wheeler AR-15 Delta Series Armorer's 7 Piece Essentials Kit with Carry Bag 156111
85623
$71.52
IN STOCK at Warehouses
10,11,12,2,4,6,8,9
Del-Ton AR-15 Stripped Bolt Carrier/Key Steel Black BC1009
8-DTI-BC1009
$51.69
IN STOCK at Warehouse
8
CMMG Mk4 AR-15 Upper Assembly Flat Top Aluminum Black 55BA22C
7-55BA22C
$102.84
IN STOCK at Warehouses
2,7
CMMG Mk4 AR-15 Upper Assembly Flat Top Aluminum Black 55BA22C
2-CMMG55BA22C
$96.40
IN STOCK at Warehouses
2,7
Windham Weaponry AR-15 Lower Receiver Parts Kit KIT-LOWER-AR
84216
$64.37
IN STOCK at Warehouses
4,8,9
Daniel Defense AR-15 Lower Parts Kit with MagPul Trigger Guard 05-013-21007
7-DD21007
$99.00
IN STOCK at Warehouses
2,7
Daniel Defense AR-15 Lower Parts Kit with MagPul Trigger Guard 05-013-21007
2-DD05-013-21007
$99.00
IN STOCK at Warehouses
2,7
VLTOR EMOD AR-15 Basic EMOD Combo Stock Assembly Complete Kit Mil-Spec Black AEBKMB
7-AEBKMB
$166.36
IN STOCK at Warehouse
7
VLTOR IMOD Improved Modstock AR-15 Military Specification Clubfoot Combo Kit Black AIBK-MCB
7-AIBKMCB
$135.11
IN STOCK at Warehouse
7
TAPCO AR-15 Mil-Spec Complete Receiver Extension Kit Aluminum Black ZAR09106
2-TINZAR09106
$45.56
IN STOCK at Warehouses
2,4
TAPCO AR-15 Mil-Spec Complete Receiver Extension Kit Aluminum Black ZAR09106
81929
$53.99
IN STOCK at Warehouses
2,4
AR-15 Del-ton Rifle Kit Flat Top M4 Mid Length 16  1:9 Twist 5.56 Chamber Adjustable Mil Spec Stock Set Full LPK
ARR-706
$479.97
IN STOCK at Warehouse
1
M4 Rifle Kit Complete Less Lower, 16  M-4 Barrel 1x7  Twist Standard Carbine Handguards and 6 Position Stock
ARR-646
$499.97
IN STOCK at Warehouse
1
M4 Rifle Kit Complete Less Lower, 16  M-4 Barrel 1x9  Twist CAR Handguards and 6 Pos Stock
ARR-647
$499.97
IN STOCK at Warehouse
1
Max-ops H-K Type Hook Kit 1
8-OC-HK28205
$7.11
IN STOCK at Warehouses
7,8
Max-Ops Hk Hook Kit For 1.25  2 Each Steel Hooks With Slip Locks
8-OC-HK28206
$7.11
IN STOCK at Warehouses
7,8
Max-Ops Hk Hook Kit For 1.25  2 Each Steel Hooks With Slip Locks
7-28206
$7.54
IN STOCK at Warehouses
7,8
ATI Omni AR-15 Stripped Lower Receiver Hybrid Polymer/Steel Matte Black ATIGLOW200
6-0138436
$41.94
IN STOCK at Warehouses
6,7
Doublestar Complete AR-15 Lower Parts Kit Mil Spec AR270
8-DSC-AR270
$68.99
IN STOCK at Warehouse
8
AR-15 Lower Parts Kit Contains 25 Essential Componets LBE Unlimited
ARR-762
$59.97
IN STOCK at Warehouses
2,1
AR-15 Complete 28 Piece Lower Parts Kit LBE Unlimited
ARR-763
$69.97
IN STOCK at Warehouses
2,1
AR-15 Lower Parts Kit Contains 25 Essential Componets LBE Unlimited
2-LBAR15LPK
$59.27
IN STOCK at Warehouses
2,1
Troy Industries M7 Complete Upgrade Kit for 5.56 Lower SM7A-CUK-00BT-01
9-71878
$1,899.00
IN STOCK at Warehouses
6,9
Troy Industries M7 Complete Upgrade Kit for 5.56 Lower SM7A-CUK-00BT-01
6-0406516
$1,454.01
IN STOCK at Warehouses
6,9
 
 
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