Top AR15 Lower Parts for Custom Builds | Midstate Firearms - Page 3

Showing 97–144 of 543 results

-50%

16″ Ar15 5.56/223 Upper with Light MLOK Handguard
Barrel Size: 16"

Rated 4.62 out of 5 based on 13 customer ratings
(13)
Original price was: $399.00.Current price is: $199.00. View Product
-50%

16” 223 Wylde Mid Length Diamond Fluted 1/7 Ar15 stainless barrel
Caliber: 5.56/.223
Barrel Size: 16"

Rated 5.00 out of 5 based on 1 customer rating
(1)
Original price was: $399.00.Current price is: $199.00. View Product
-50%

16” 223 Wylde Mid Length Diamond Fluted 1/7 Ar15 stainless barrel
Barrel Size: 16"
Caliber: 5.56/.223
Original price was: $399.00.Current price is: $199.00. View Product
-40%

16” Non-threaded Ar-15 upper – 300 Blackout with MLOK Handguard
Barrel Size: 16"
Caliber: 300 BLK
Original price was: $499.00.Current price is: $299.00. View Product
-40%

16” Non-threaded Ar-15 upper – 556 / 223 wylde 1/8 with MLOK Handguard

Rated 5.00 out of 5 based on 1 customer rating
(1)
Original price was: $499.00.Current price is: $299.00. View Product
-29%

17.1” SS 223 Wylde Ar15 Upper with 15” mlok rail – flat spiral flute
Original price was: $549.00.Current price is: $389.00. View Product
-38%

16″ 9mm Black Nitride Ar15 / Ar9 Barrel, 1/2-28 threads
Caliber: 9mm
Barrel Size: 16"
Original price was: $159.00.Current price is: $99.00. View Product
-42%

24″ 223 Wylde 1/8 Diamond Fluted 2tone SS Ar-15 Upper, Threaded
Thread Pitch: 1/2x28
Model Style: Ar-15

Rated 5.00 out of 5 based on 3 customer ratings
(3)
Original price was: $599.00.Current price is: $349.00. View Product
-34%

*FFL Item* Hawk Tuah meme engraved F&D Defense Ar15 stripped lower
Original price was: $149.00.Current price is: $99.00. View Product
1/2-28 Jam Nut, Muzzle Timing Indexing Device for Ar15
$0.99 View Product
-70%

3″ 9mm Ar15 Pistol Barrel, 5/8-24 Nitride
Thread Pitch: 5/8x24
Caliber: 9mm

Rated 5.00 out of 5 based on 4 customer ratings
(4)
Original price was: $129.00.Current price is: $39.00. View Product
-68%

4 pack of 3” 9mm ar15 ar9 barrels
Original price was: $399.00.Current price is: $129.00. View Product
-17%

6.5 Creedmoor 20” stainless fluted barrel
Original price was: $299.00.Current price is: $249.00. View Product
-13%

Ar15 / Ar10 Stainless Magazine Catch / Release with Button
Original price was: $22.99.Current price is: $19.95. View Product
-41%

Value H3 Weight Buffer for Ar15 / ar9 – 5.6oz Heavy Recoil Buffer
Original price was: $49.00.Current price is: $29.00. View Product
-34%

Ar15 / M16 / M4 DLC MPI Bolt Assembly
Original price was: $89.00.Current price is: $59.00. View Product
-66%

Ar15 / M16 / M4 DLC Stripped MPI Bolt

Rated 5.00 out of 5 based on 5 customer ratings
(5)
Original price was: $59.00.Current price is: $19.99. View Product
-36%

Ar15 / M16 Bolt Carrier Group (MPI) – Auto – FLAT DARK EARTH-IB FDE 5.56
Original price was: $249.00.Current price is: $159.00. View Product
Ar15 / m16 Gas Key and OCKS gas key screws combo – reliability upgrade kit

Rated 5.00 out of 5 based on 2 customer ratings
(2)
$14.99 View Product
-18%

Ar15 Left Handed Builder Bundle – Slick Side Receiver and Nitride BCG Combo
Original price was: $279.99.Current price is: $229.99. View Product
-11%

Ar15 LeftY Builder Bundle – Billet Receiver and NiCkel Boron BCG Combo
Original price was: $279.99.Current price is: $249.99. View Product
Ar15 Nickel boron silver stainless bolt catch
$29.95 View Product
-9%

Arisaka Finger STop FS-M For MLOK Handguards
Original price was: $33.00.Current price is: $29.99. View Product
-9%

Arisaka Indexer IDX-M For MLOK Handguards
Original price was: $33.00.Current price is: $29.99. View Product
-24%

Basic Ar-15 LPK OOps / Completion Kit – No FCG, No trigger/hammer, no grip

Rated 5.00 out of 5 based on 1 customer rating
(1)
Original price was: $32.95.Current price is: $24.99. View Product
Black Micro WARHAMMER Mod2 AR-15 Charging Handle – Breek Arms
$54.99 View Product
-21%

Blem 5″ Ar9 Threaded Ar15 Pistol MLok Upper
Caliber: 9mm
Rail Length: 4"

Rated 4.33 out of 5 based on 3 customer ratings
(3)
Original price was: $249.00.Current price is: $197.00. View Product
-39%

Bolt Only – Microbest m16 Full Chrome HPT / MPI Bolt Face Assembly, Sprinco
Caliber: 5.56/.223, 300 BLK

Rated 5.00 out of 5 based on 1 customer rating
(1)
Original price was: $129.00.Current price is: $79.00. View Product
-39%

Bolt Only – Microbest m16 Full Chrome HPT / MPI Bolt Face Assembly, Sprinco, blem
Caliber: 5.56/.223, 300 BLK
Original price was: $129.00.Current price is: $79.00. View Product
Breek Arms 2BO-S Short Ar15 Muzzle Brake Single Port 1/2-28 5.56 to 9mm
Caliber: .308, 5.56/.223, 9mm
Thread Pitch: 1/2x28
$39.99
You save (%) View Product
-20%

Breek Arms 3FO Ar15 Flash Hider v2 3 Prong 5/8-24
Caliber: .308, 300 BLK, 9mm
Thread Pitch: 5/8x24
Original price was: $49.99.Current price is: $39.99. View Product
-20%

OTx 3FO Ar15 Flash Hider v2 3 Prong 1/2-28 Outside Threaded
Thread Pitch: 1/2x28
Caliber: .308, 5.56/.223, 300 BLK, 9mm
Original price was: $49.99.Current price is: $39.99. View Product
-20%

Breek Arms 3FO-S Ar15 Outside Threaded Flash Hider Short 1/2-36
Thread Pitch: 1/2x36
Caliber: .308, 300 BLK, 9mm
Original price was: $49.99.Current price is: $39.99. View Product
-20%

Breek Arms 3FO-S Ar15 Outside Threaded Flash Hider Short 5/8-24
Caliber: .308, 300 BLK, 9mm
Thread Pitch: 5/8x24
Original price was: $49.99.Current price is: $39.99. View Product
-20%

OTx 3FO-S Ar15 Outside Threaded Flash Hider Short 5/8-24
Caliber: .308, 300 BLK, 9mm
Thread Pitch: 5/8x24
Original price was: $49.99.Current price is: $39.99. View Product
-20%

Breek Arms BFO Ar15 Flash Hider, Caged 3prong, 5/8-24
Caliber: .308, 5.56/.223, 9mm
Thread Pitch: 1/2x28, 5/8x24
Original price was: $49.99.Current price is: $39.99. View Product
-7%

Breek Arms CASTLE BLAST SHIELD Concussion Device

Rated 5.00 out of 5 based on 1 customer rating
(1)
Original price was: $42.99.Current price is: $39.99. View Product
-7%

OTX CASTLE BLAST SHIELD Concussion Device
Original price was: $42.99.Current price is: $39.99. View Product
Breek Arms SLEDGEHAMMER Gas Blocking Ar15 Charging Handle – Black
$79.99 View Product
Breek Arms SLEDGEHAMMER Gas Blocking Ar15 Charging Handle – FDE
$79.99 View Product
Breek Arms SLEDGEHAMMER Gas Blocking Ar15 Charging Handle – Grey
$79.99 View Product
-10%

Breek Arms WARHAMMER Ambidextrous Ar15 Charging Handle – Black

Rated 4.00 out of 5 based on 4 customer ratings
(4)
Original price was: $49.99.Current price is: $45.00. View Product
-10%

Breek Arms WARHAMMER Ambidextrous AR15 Charging Handle – FDE / Tan

Rated 5.00 out of 5 based on 2 customer ratings
(2)
Original price was: $49.99.Current price is: $45.00. View Product
-10%

Breek Arms WARHAMMER Ambidextrous AR15 Charging Handle – Gray

Rated 5.00 out of 5 based on 1 customer rating
(1)
Original price was: $49.99.Current price is: $45.00. View Product
-10%

Breek Arms WARHAMMER Ambidextrous AR15 Charging Handle – OD Green
Original price was: $49.99.Current price is: $45.00. View Product
-19%

Combo deal! Criterion 13.9” Core Chrome lined Ar15 barrel and Microbest Full Chrome M16 BCG

Rated 5.00 out of 5 based on 2 customer ratings
(2)
Original price was: $529.00.Current price is: $429.00. View Product
-27%

Complete Rifle, 20″ A2 / M16a4 Style 5.56 Ar15 With Carry Handle and A2 Stock
Original price was: $1,499.00.Current price is: $1,099.00. View Product
Dead Air KeyMo Muzzle Brake 1/2-28 223 / 556 Ar15
Thread Pitch: 1/2x28
$89.00 View Product

Showing 97–144 of 543 results