Upper Receiver Parts & Kits for Sale | AR-15 Upper Receiver Assembly — Mid State Firearms - Page 3

Showing 97–144 of 384 results

-24%

1/2-28 Ar15 Flash Can, Black
Thread Pitch: 1/2x28
Original price was: $46.31.Current price is: $35.00. View Product
-33%

1/2″ Crush Washer (5.56/223)
Original price was: $2.98.Current price is: $1.99. View Product
-51%

10.5″ 5.56 NATO AR-15 Barrel — 4150 CMV, M4 Contour, 1:7 Twist
Caliber: 5.56/.223
Barrel Size: 10.5"
Original price was: $263.28.Current price is: $129.00. View Product
-25%

10.5″ 7.62×39 Ar15 Pistol Barrel
Original price was: $157.44.Current price is: $118.80. View Product
-46%

10.5″ 9mm Nitride Ar15 Barrel
Caliber: 9mm
Barrel Size: 10.5"
Original price was: $183.90.Current price is: $99.00. View Product
-50%

10.5″ SS 300 AAC Blackout Ar15 Barrel 1:8 , pistol gas 5/8-24
Caliber: 300 BLK
Barrel Size: 10.5"
Original price was: $263.28.Current price is: $130.98. View Product
-50%

10.5″ Stainless 1:8 5.56 / .223 Wylde Ar15 Barrel
Barrel Size: 10.5"
Caliber: 5.56/.223
Original price was: $263.28.Current price is: $130.98. View Product
-51%

10.5″ Stainless 1:8 5.56 / .223 Wylde Ar15 Barrel
Barrel Size: 10.5"
Caliber: 5.56/.223
Original price was: $263.28.Current price is: $129.00. View Product
10″ 7 Side Free Float M-LOK Rail
Rail Length: 10"

Rated 5.00 out of 5 based on 1 customer rating
(1)
$89.99 View Product
10″ Free Float Quad Rail – Picatinny Handguard
Rail Length: 10"
$59.99 View Product
10″ Slanted Hybrid M-LOK Handguard
Rail Length: 10"
$119.99 View Product
10″ Ultralight M-LOK Handguard Free Float Rail
Rail Length: 10"
$69.99 View Product
-48%

11.5″ 5.56 NATO AR-15 Barrel — 4150 CMV, M4 Contour, 1:7 Twist, Carbine Gas
Barrel Size: 11.5"
Caliber: 5.56/.223
Original price was: $263.28.Current price is: $137.44. View Product
-4%

12.5″ Rosco AR-15 Barrel — 4150 CMV, Nitride Finish, 1:7 Twist (5.56 NATO)
Barrel Size: 12.5"
Caliber: 5.56/.223
Original price was: $165.00.Current price is: $159.00. View Product
12″ 7side slim M-Lok AR15 free float Handguard
Rail Length: 12"
$130.98 View Product
12″ Free Float Quad Rail – Picatinny Handguard
Rail Length: 12"
$69.99 View Product
-40%

12″ Gen3 Slim Free Float Rail / Handguard
Rail Length: 12"
Original price was: $165.37.Current price is: $99.00. View Product
-46%

12″ Slanted Hybrid M-Lok Free Float Rail
Rail Length: 12"

Rated 5 out of 5 based on 2 customer ratings
(2)
Original price was: $236.82.Current price is: $129.00. View Product
12″ Ultralight M-LOK Free Float Handguard
Rail Length: 12"
$109.99 View Product
15″ 7side Slim MLok ar15 Free Float Handguard
Rail Length: 15"
$130.98 View Product
-48%

15″ Gen3 Slim Free Float Handguard
Rail Length: 15"

Rated 5 out of 5 based on 1 customer rating
(1)
Original price was: $191.83.Current price is: $99.00. View Product
-53%

15″ Slanted Hybrid M-Lok Free Float Rail
Rail Length: 15"

Rated 4.00 out of 5 based on 1 customer rating
(1)
Original price was: $276.50.Current price is: $129.00. View Product
-23%

15″ Ultralight Slim M-Lok Handguard
Rail Length: 15"
Original price was: $170.66.Current price is: $130.98. View Product
-48%

16″ .223 Wylde 1:8 Stainless Diamond Carbine Fluted Ar15 Barrel
Barrel Size: 16"
Caliber: 5.56/.223
Original price was: $382.34.Current price is: $199.00. View Product
-53%

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

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

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

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
Barrel Size: 16"
Caliber: .308
Original price was: $329.42.Current price is: $129.00. View Product
-20%

16″ 458 Socom 4150 .875 Ar15 Carbine Barrel
Caliber: .458 Socom
Barrel Size: 16"
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
Barrel Size: 16"
Caliber: 5.56/.223
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
Caliber: 5.56/.223
Barrel Size: 16"
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
Caliber: 5.56/.223
Barrel Size: 16"
Original price was: $223.58.Current price is: $149.00. View Product
-44%

18″ 1:8 416r Stainless Fluted .223 Wylde Barrel
Caliber: 5.56/.223
Barrel Size: 18"
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
-30%

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: $249.00. View Product
-38%

24″ 5.56 / .223 Wylde SS Diamond Fluted 1:8 .936 Bull Barrel, Threaded
Thread Pitch: 1/2x28
Model Style: Ar-15

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
Barrel Size: 3"
Caliber: 9mm
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
-41%

308 DPMS Style Ar10 / LR-308 Nitride Bolt Carrier Group
Original price was: $236.82.Current price is: $139.00. 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

Showing 97–144 of 384 results