Upper Receiver Parts & Kits for Sale | AR-15 Upper Receiver Assembly — Mid State Firearms - Page 4

Showing 145–192 of 380 results

-53%

16″ 223 Wylde 1:8 4150 m4 Ar15 Barrel
Caliber: 5.56/.223
Barrel Size: 16"
Original price was: $276.50.Current price is: $129.00. View Product
-53%

16″ 223 Wylde 1:8 Melonite M4 Ar15 Barrel
Barrel Size: 16"
Caliber: 5.56/.223
Original price was: $276.50.Current price is: $129.00. View Product
-50%

16″ 300 Blackout 1:8 Ar15 Barrel, Pistol gas
Barrel Size: 16"
Caliber: 300 BLK

Rated 4.67 out of 5 based on 6 customer ratings
(6)
Original price was: $238.13.Current price is: $119.00. View Product
-46%

16″ 300 Blackout Ar15 1:8 Barrel, Pistol Gas
Original price was: $238.13.Current price is: $129.00. View Product
-61%

16″ 4150 Chrome Moly .308 Ar10 Lr-308 Dpms Barrels
Caliber: .308
Barrel Size: 16"
Original price was: $329.42.Current price is: $129.00. View Product
-20%

16″ 458 Socom 4150 .875 Ar15 Carbine Barrel
Barrel Size: 16"
Caliber: .458 Socom
Original price was: $249.99.Current price is: $199.00. View Product
-13%

16″ 5.56 1:7 GOV PROFILE MIDLENGTH AR 15 BARREL, Ballistic Adv.
Caliber: 5.56/.223
Barrel Size: 16"
Original price was: $160.00.Current price is: $139.00. View Product
-13%

16″ 5.56 M4 CARBINE LENGTH AR 15 BARREL, MODERN SERIES, BA
Caliber: 5.56/.223
Barrel Size: 16"
Original price was: $160.00.Current price is: $139.00. View Product
-49%

16″ 7.62×39 Ar15 1:10 Barrel, Carbine
Caliber: 7.62x39
Barrel Size: 16"

Rated 5 out of 5 based on 1 customer rating
(1)
Original price was: $251.35.Current price is: $129.00. View Product
-38%

16″ Mid-Length 5.56 NATO 1:7 4150 Ar15 Barrel
Barrel Size: 16"
Caliber: 5.56/.223
Original price was: $223.58.Current price is: $139.00. View Product
-46%

16″ SS 5.56 / 223 Wylde 1:8 Mid-Length Lightweight Pencil Barrel
Barrel Size: 16"
Caliber: 5.56/.223

Rated 5.00 out of 5 based on 2 customer ratings
(2)
Original price was: $304.22.Current price is: $165.31. View Product
-33%

16″ Stainless Mid-Length 5.56 NATO 1:7 Ar15 Barrel
Barrel Size: 16"
Caliber: 5.56/.223
Original price was: $223.58.Current price is: $149.00. View Product
-20%

17.1″ 223 Wylde 1:8 SS Twist Fluted Ar15 Barrel, mid length gas
Caliber: 5.56/.223
Barrel Size: 18"

Rated 5.00 out of 5 based on 4 customer ratings
(4)
Original price was: $249.00.Current price is: $199.00. View Product
-44%

18″ 1:8 416r Stainless Fluted .223 Wylde Barrel
Barrel Size: 18"
Caliber: 5.56/.223
Original price was: $357.19.Current price is: $199.00. View Product
-44%

18″ Spiral Fluted 1:8 416r Stainless .223 Barrel
Barrel Size: 18"
Caliber: 5.56/.223

Rated 5.00 out of 5 based on 1 customer rating
(1)
Original price was: $357.19.Current price is: $199.00. View Product
-44%

20″ 416r Stainless Fluted .223 Wylde 1:8 Ar15 5r Barrel
Caliber: 5.56/.223
Barrel Size: 20"
Original price was: $357.19.Current price is: $199.00. View Product
-44%

20″ Stainless Fluted 5.56 Nato 5R Rifled 1:8 Ar15 Barrel
Original price was: $357.19.Current price is: $199.00. View Product
-38%

24″ 5.56 / .223 Wylde SS Diamond Fluted 1:8 .936 Bull Barrel, Threaded
Thread Pitch: 1/2x28
Caliber: 5.56/.223

Rated 5.00 out of 5 based on 1 customer rating
(1)
Original price was: $322.04.Current price is: $199.28. View Product
25 Pack of Blem Stripped Upper
$1,211.02 View Product
-50%

3″ 9mm Ar15 Ar9 5/8-24 Threaded Barrel
Caliber: 9mm
Barrel Size: 3"
Original price was: $197.12.Current price is: $99.00. View Product
-60%

3″ 9mm Ar15 Ar9 5/8-24 Threaded Barrel – raw 4150 uncoated
Caliber: 9mm
Barrel Size: 3"

Rated 4.00 out of 5 based on 1 customer rating
(1)
Original price was: $197.12.Current price is: $79.00. View Product
-29%

308 Melonite Bolt Carrier Group
Original price was: $236.82.Current price is: $169.00. View Product
4″ Slim M-LOK AR-15 Handguard
Rail Length: 4"
$69.99 View Product
-38%

458 Socom / 450 Bushmaster Ar15 BCG Bolt Carrier Group – Nickel Boron
Caliber: .450 Bushmaster, .458 Socom
Original price was: $288.54.Current price is: $179.00. View Product
-38%

6.8 SPC II / 224 valkyrie Ar15 BCG Bolt Carrier Group – Nickel Boron
Caliber: 6.8 SPC II
Original price was: $288.54.Current price is: $179.00. View Product
-54%

458 Socom / 450 Bushmaster Ar15 BCG Bolt Carrier Group – Nitride
Caliber: .450 Bushmaster, .458 Socom
Original price was: $280.04.Current price is: $129.00. View Product
-26%

49/64-20 Muzzle Brake Flash Hider for 12.7×42 50 Beowulf Ar-15
Thread Pitch: 49/64x20

Rated 5.00 out of 5 based on 1 customer rating
(1)
Original price was: $79.37.Current price is: $59.13. View Product
-20%

5″ 9mm 1:10 Stainless Ar15 Barrel threaded 5/8-24 ar9
Original price was: $197.12.Current price is: $157.44. View Product
-46%

5″ 9mm Nitride Ar15 Barrel
Barrel Size: 5"
Caliber: 9mm
Original price was: $183.90.Current price is: $99.00. View Product
-24%

5/8-24 Flash Can, Black Ar15 / Ar10
Caliber: .308
Thread Pitch: 5/8x24
Original price was: $46.31.Current price is: $35.00. View Product
5/8-32 threads 458 socom 450 A2 Birdcage Ar15 Flash Hider
Thread Pitch: 5/8x32
Caliber: .450 Bushmaster, .458 Socom

Rated 5.00 out of 5 based on 2 customer ratings
(2)
$26.45 View Product
-40%

6.5 Grendel II Bolt Carrier Group
Original price was: $250.04.Current price is: $149.98. View Product
-45%

7.5″ .300 AAC Blackout Ar15 Pistol Barrel
Original price was: $197.12.Current price is: $109.00. View Product
-56%

7.5″ 5.56 / .223 1:7 4150 Ar15 pistol Barrel
Caliber: 5.56/.223
Barrel Size: 7.5"

Rated 5 out of 5 based on 1 customer rating
(1)
Original price was: $224.89.Current price is: $99.00. View Product
-37%

7.5″ 7.62×39 Ar15 Pistol Barrel

Rated 5.00 out of 5 based on 1 customer rating
(1)
Original price was: $157.44.Current price is: $99.00. View Product
-38%

7.5″ Stainless 5.56 / .223 Wylde 1:7 416r Barrel
Caliber: 5.56/.223
Barrel Size: 7.5"

Rated 5.00 out of 5 based on 1 customer rating
(1)
Original price was: $224.89.Current price is: $139.98. View Product
-10%

7.62×39 Ar15 Nickel Boron Bolt, Enhanced Firing Pin, hvy spring

Rated 5.00 out of 5 based on 1 customer rating
(1)
Original price was: $99.00.Current price is: $89.00. View Product
-48%

7.62×39 M16 / Ar15 Bolt Carrier Group
Original price was: $250.04.Current price is: $129.00. View Product
-10%

7″ 7 Side M-LOK Ar15 handguard
Rail Length: 7"
Original price was: $99.00.Current price is: $89.00. View Product
7″ gen1 free float quad rail
Rail Length: 7"
$66.13 View Product
7″ Slanted Hybrid M-LOK Free Float Rail / Handguard
Rail Length: 7"
$89.99 View Product
7″ Ultralight Free Float Slim M-LOK Rail
Rail Length: 7"
$69.99 View Product
-47%

9mm Nitride Hybrid Bolt Carrier Group for Glock & Colt AR15 mags

Rated 3.5 out of 5 based on 2 customer ratings
(2)
Original price was: $224.89.Current price is: $119.00. View Product
-24%

A2 Flash Hider – 1/2-28 5.56/223 Threads
Thread Pitch: 1/2x28

Rated 5.00 out of 5 based on 2 customer ratings
(2)
Original price was: $10.58.Current price is: $8.00. View Product
-29%

AR 308 / DPMS / ar10 Stripped Upper Receiver with DCFA
Original price was: $197.12.Current price is: $139.00. View Product
-20%

AR10 / DPMS / 308 Stripped Upper Receiver with DCFA + Armaspec Victory
Original price was: $249.99.Current price is: $199.99. View Product
-41%

AR-15 Upper Parts Kit – Charging Handle, Fwd Assist & Dust Cover
Original price was: $47.63.Current price is: $27.99. View Product
-24%

Ar15 / M16 Firing Pin

Rated 5.00 out of 5 based on 1 customer rating
(1)
Original price was: $9.20.Current price is: $6.99. View Product

Showing 145–192 of 380 results