Rosco Manufacturing Bloodline .300 AAC Blackout Barrel 16 in Pistol Heavy 1-8 Twist 5/8x24 Thread Nitride Black BL-16-HB-300BLK-8-P

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Tactical

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Tactical. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these... ... more

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Blue

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Blue. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Flat Dark

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Flat Dark. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these... ... more

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Tungsten

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Tungsten. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these... ... more

TRYBE Defense Threaded Barrel AR-15 .300 Blackout 10.5 inch Government Profile Pistol Length 1-7 Twist 5/8x24 Thread Nitride Finish Black

TRYBE Defense Threaded Barrel AR-15 .300 Blackout 10.5 inch Government Profile Pistol Length 1-7 Twist 5/8x24 Thread Nitride Finish Black. This 10.5" barrel chambered in .300 AAC Blackout boasts a beautiful government profile and is milled from 4150... ... more

Rosco Manufacturing Purebred .300 AAC Blackout Barrel 10.5in Pistol Heavy 1-7 Twist 5/8x24 Thread 80 Grit Bead Blast Stainless PB-105-HB-300BLK-7-P

Rosco Manufacturing Purebred .300 AAC Blackout Barrel 10.5in Pistol Heavy 1-7 Twist 5/8x24 Thread 80 Grit Bead Blast Stainless PB-105-HB-300BLK-7-P. 300 AAC Blackout Barrel to advance your aim and overall performance when putting shots on target.... ... more

Rosco Manufacturing Purebred .300 AAC Blackout Barrel 16in Pistol Heavy 1-8 Twist 5/8x24 Thread 80 Grit Bead Blast Stainless PB-16-HB-300BLK-8-P

Rosco Manufacturing Purebred .300 AAC Blackout Barrel 16in Pistol Heavy 1-8 Twist 5/8x24 Thread 80 Grit Bead Blast Stainless PB-16-HB-300BLK-8-P. 300 AAC Blackout Barrel to advance your aim and overall performance when putting shots on target. These... ... more

BSF Barrels AR Carbon Fiber Barrel AR-15 .300 AAC Blackout 10 in Pistol Length 1-8 Twist 5/8x24 Thread .875 OD Gray FP1510B0018

BSF Barrels AR Carbon Fiber Barrel AR-15 .300 AAC Blackout 10 in Pistol Length 1-8 Twist 5/8x24 Thread .875 OD Gray FP1510B0018. 300 AAC Blackout Carbon Fiber Barrel. These Rifle Barrels by BSF Barrels are constructed from .300 AAC Blackout... ... more

BSF Barrels AR Carbon Fiber Barrel AR-15 .300 AAC Blackout 14.5 in Pistol Length 1-7 Twist 5/8x24 Thread .875 OD Gray FP1514B0087

BSF Barrels AR Carbon Fiber Barrel AR-15 .300 AAC Blackout 14.5 in Pistol Length 1-7 Twist 5/8x24 Thread .875 OD Gray FP1514B0087. 300 AAC Blackout Carbon Fiber Barrel. These Rifle Barrels by BSF Barrels are constructed from .300 AAC Blackout... ... more

BSF Barrels AR Carbon Fiber Barrel AR-15 .300 AAC Blackout 14.5 in Pistol Length 1-8 Twist 5/8x24 Thread .875 OD Gray FP1514B0088

BSF Barrels AR Carbon Fiber Barrel AR-15 .300 AAC Blackout 14.5 in Pistol Length 1-8 Twist 5/8x24 Thread .875 OD Gray FP1514B0088. 300 AAC Blackout Carbon Fiber Barrel. These Rifle Barrels by BSF Barrels are constructed from .300 AAC Blackout... ... more

BSF Barrels AR Carbon Fiber Barrel AR-15 .300 AAC Blackout 16 in Pistol Length 1-7 Twist 5/8x24 Thread .875 OD Gray FP1516B0087

BSF Barrels AR Carbon Fiber Barrel AR-15 .300 AAC Blackout 16 in Pistol Length 1-7 Twist 5/8x24 Thread .875 OD Gray FP1516B0087. 300 AAC Blackout Carbon Fiber Barrel. These Rifle Barrels by BSF Barrels are constructed from .300 AAC Blackout... ... more

BSF Barrels AR Carbon Fiber Barrel AR-15 .300 AAC Blackout 10 in Pistol Length 1-7 Twist 5/8x24 Thread .875 OD Gray FP1510B0017

BSF Barrels AR Carbon Fiber Barrel AR-15 .300 AAC Blackout 10 in Pistol Length 1-7 Twist 5/8x24 Thread .875 OD Gray FP1510B0017. 300 AAC Blackout Carbon Fiber Barrel. These Rifle Barrels by BSF Barrels are constructed from .300 AAC Blackout... ... more

BSF Barrels AR Carbon Fiber Barrel AR-15 .300 AAC Blackout 16 in Pistol Length 1-8 Twist 5/8x24 Thread .875 OD Gray FP1516B0028

BSF Barrels AR Carbon Fiber Barrel AR-15 .300 AAC Blackout 16 in Pistol Length 1-8 Twist 5/8x24 Thread .875 OD Gray FP1516B0028. 300 AAC Blackout Carbon Fiber Barrel. These Rifle Barrels by BSF Barrels are constructed from .300 AAC Blackout... ... more

V Seven 300 AAC Blackout Stainless Match Medium Contour 5.5 inch 1-7 Twist 5/8x24 Thread 416R 300 AAC Blackout Stainless Steel 300M7T 5.5

V Seven 300 AAC Blackout Stainless Match Medium Contour 5.5 inch 1-7 Twist 5/8x24 Thread 416R 300 AAC Blackout Stainless Steel 300M7T 5.5. V Seven machined these AR15 Barrels from 416R stainless steel for maximum ruggedness. Each V Seven 300 AAC... ... more

Rosco Manufacturing Purebred .300 AAC Blackout Barrel 8.2in Pistol Heavy 1-7 Twist 5/8x24 Thread 80 Grit Bead Blast Stainless PB-82-HB-300BLK-7-P

Rosco Manufacturing Purebred .300 AAC Blackout Barrel 8.2in Pistol Heavy 1-7 Twist 5/8x24 Thread 80 Grit Bead Blast Stainless PB-82-HB-300BLK-7-P. 300 AAC Blackout Barrel to advance your aim and overall performance when putting shots on target.... ... more

Rosco Manufacturing Bloodline 5.56 NATO Barrel M4 16in Carbine 1-7 Twist 1/2x28 Thread Nitride Black BL-16-M4-556-7-C

Rosco Manufacturing Bloodline 5.56 NATO Barrel M4 16in Carbine 1-7 Twist 1/2x28 Thread Nitride Black BL-16-M4-556-7-C. 56 (NATO) barrels are designed to meet the modern day carbine shooters requirements. We are a long way from our daddy's "Sporter"... ... more

Rosco Manufacturing Purebred .223 Wylde Barrel 16in Mid Length Government 1-8 Twist 1/2x28 Thread 80 Grit Bead Blast Stainless PB-16-GVT-223W-8-M

Rosco Manufacturing Purebred .223 Wylde Barrel 16in Mid Length Government 1-8 Twist 1/2x28 Thread 80 Grit Bead Blast Stainless PB-16-GVT-223W-8-M. These Rifle Barrels by Rosco Manufacturing offer a stronger forearm for targeting without the need for... ... more

Dark Storm Industries DS-15 Typhoon Complete Upper Receiver .300 Blackout 7.5in Barrel M4 Pistol Profile 1-8 Twist 5/8x24 Thread M-Lok FirestormType

Dark Storm Industries DS-15 Typhoon Complete Upper Receiver .300 Blackout 7.5in Barrel M4 Pistol Profile 1-8 Twist 5/8x24 Thread M-Lok FirestormType. 5in .300 Blackout Complete Upper Receiver. These AR15 Upper Receivers through the expert product... ... more

CBC Industries 300 AAC Blackout AR-15 Barrel 5/8x24 1-8 Pistol Length 7.5in Black Nitride 110-120

CBC Industries 300 AAC Blackout AR-15 Barrel 5/8x24 1-8 Pistol Length 7.5in Black Nitride 110-120. This barrel has a nitride finish for increased strength and durability. This provides not only an impressive barrel life but ensures excellent... ... more

Brenton USA Upper Receiver Guide .300 AAC Blackout 18in Barrel 5/8x24 Thread 1-8 Twist Midnight MarbleKote Midnight MarbleKote ULG18MM30B

Brenton USA Upper Receiver Guide .300 AAC Blackout 18in Barrel 5/8x24 Thread 1-8 Twist Midnight MarbleKote Midnight MarbleKote ULG18MM30B. Limited rifles are available in Midnight adjustable stock configuration only and include Black Nitride carrier... ... more

Brenton USA Upper Receiver Scout .300 Blackout 18in Barrel 5/8x24 Thread 1-8 Twist Autumn MarbleKote Autumn MarbleKote UPS18AM30B

Brenton USA Upper Receiver Scout .300 Blackout 18in Barrel 5/8x24 Thread 1-8 Twist Autumn MarbleKote Autumn MarbleKote UPS18AM30B. Pursuit rifles look feel and perform like you expect a perfectly balanced system should. Pursuit rifles are perfect... ... more

Brenton USA Upper Receiver Scout .300 Blackout 18in Barrel 5/8x24 Thread 1-8 Twist Foliage MarbleKote FoliageMarbleKote UPS18FM30B

Brenton USA Upper Receiver Scout .300 Blackout 18in Barrel 5/8x24 Thread 1-8 Twist Foliage MarbleKote FoliageMarbleKote UPS18FM30B. Pursuit rifles look feel and perform like you expect a perfectly balanced system should. Pursuit rifles are perfect... ... more

Brenton USA Upper Receiver Scout .300 Blackout 18in Barrel 5/8x24 Thread 1-8 Twist Harvest MarbleKote Harvest MarbleKote UPS18HM30B

Brenton USA Upper Receiver Scout .300 Blackout 18in Barrel 5/8x24 Thread 1-8 Twist Harvest MarbleKote Harvest MarbleKote UPS18HM30B. Pursuit rifles look feel and perform like you expect a perfectly balanced system should. Pursuit rifles are perfect... ... more

Brenton USA Upper Receiver Scout .300 Blackout 18in Barrel 5/8x24 Thread 1-8 Twist Harvest MarbleKote Midnight MarbleKote UPS18MM30B

Brenton USA Upper Receiver Scout .300 Blackout 18in Barrel 5/8x24 Thread 1-8 Twist Harvest MarbleKote Midnight MarbleKote UPS18MM30B. Pursuit rifles look feel and perform like you expect a perfectly balanced system should. Pursuit rifles are perfect... ... more

Brenton USA Upper Receiver Scout .300 Blackout 18in Barrel 5/8x24 Thread 1-8 Twist Snow MarbleKote Snow MarbleKote UPS18SM30B

Brenton USA Upper Receiver Scout .300 Blackout 18in Barrel 5/8x24 Thread 1-8 Twist Snow MarbleKote Snow MarbleKote UPS18SM30B. Pursuit rifles look feel and perform like you expect a perfectly balanced system should. Pursuit rifles are perfect for... ... more

Tactical Kinetics Barrel AR-15 .300 AAC BLK 16.25in Medium Contour Pistol Length Gas 1-8 Twist Black Nitride TK1757

Tactical Kinetics Barrel AR-15 .300 AAC BLK 16.25in Medium Contour Pistol Length Gas 1-8 Twist Black Nitride TK1757. Every barrel is precision instrument-inspected for absolute straightness and air gauged for maximum uniformity yielding the highest... ... more

Grey Ghost Precision Complete Upper .300 Blackout 25.75in 16 inch 1-10 5/8x24 Heavy Pistol M-LOK Anodized Finish Black GGP-300-16-UC

Grey Ghost Precision Complete Upper .300 Blackout 25.75in 16 inch 1-10 5/8x24 Heavy Pistol M-LOK Anodized Finish Black GGP-300-16-UC. 300 AAC Blackout has become a favorite among hunters due to its lack of recoil and relatively short overall length... ... more

Rosco Manufacturing Bloodline .300 AAC Blackout Barrel 10.5 in Pistol Heavy 1-7 Twist 5/8x24 Thread Nitride Black BL-105-HB-300BLK-7-P

Rosco Manufacturing Bloodline .300 AAC Blackout Barrel 10.5 in Pistol Heavy 1-7 Twist 5/8x24 Thread Nitride Black BL-105-HB-300BLK-7-P. This is the shortest that Rosco Manufacturing will go to allow you the flexibility of a shorter Personal Defense... ... more

Rosco Manufacturing Bloodline .300 AAC Blackout Barrel 8.2 in Pistol Heavy 1-7 Twist 5/8x24 Thread Nitride Black BL-82-HB-300BLK-7-P

Rosco Manufacturing Bloodline .300 AAC Blackout Barrel 8.2 in Pistol Heavy 1-7 Twist 5/8x24 Thread Nitride Black BL-82-HB-300BLK-7-P. This is the shortest that Rosco Manufacturing will go to allow you the flexibility of a shorter Personal Defense... ... more

Radian Weapons Model 1 Complete Upper Receiver .300 AAC Blackout 9 in Barrel Custom Pistol Length 1-5 Twist 5/8x24 Thread M-LOK Deadair Flash Hider

Radian Weapons Model 1 Complete Upper Receiver .300 AAC Blackout 9 in Barrel Custom Pistol Length 1-5 Twist 5/8x24 Thread M-LOK Deadair Flash Hider. Beyond quality and aesthetics the Model 1 features fully ambidextrous controls adding much-needed... ... more

Radian Weapons Model 1 Complete Upper Receiver .300 AAC Blackout 9 in Barrel Custom Pistol Length 1-5 Twist 1/2x28 Thread M-LOK Deadair Flash Hider

Radian Weapons Model 1 Complete Upper Receiver .300 AAC Blackout 9 in Barrel Custom Pistol Length 1-5 Twist 1/2x28 Thread M-LOK Deadair Flash Hider. Beyond quality and aesthetics the Model 1 features fully ambidextrous controls adding much-needed... ... more

Radian Weapons Model 1 Complete Upper Receiver .300 AAC Blackout 9 in Barrel Custom Pistol Length 1-5 Twist 1/2x28 Thread M-LOK Deadair Flash Hider OD

Radian Weapons Model 1 Complete Upper Receiver .300 AAC Blackout 9 in Barrel Custom Pistol Length 1-5 Twist 1/2x28 Thread M-LOK Deadair Flash Hider OD. Beyond quality and aesthetics the Model 1 features fully ambidextrous controls adding much-needed... ... more

XTS Complete Upper Receiver w/o BCG AR-15 300 BO 17.5in 8.5in Pistol 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish XTSCU8300BK

XTS Complete Upper Receiver w/o BCG AR-15 300 BO 17.5in 8.5in Pistol 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish XTSCU8300BK. 5in AR15 300 Blackout upper comes FULLY ASSEMBLED With an Anchor Harvey Upper and an XTS Hand Guard. These... ... more

XTS Complete Upper Receiver w/o BCG AR-15 300 BO 17.5in 8.5in Pistol 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish Blue XTSCU8300BL

XTS Complete Upper Receiver w/o BCG AR-15 300 BO 17.5in 8.5in Pistol 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish Blue XTSCU8300BL. 5in AR15 300 Blackout upper comes FULLY ASSEMBLED With an Anchor Harvey Upper and an XTS Hand Guard.... ... more

XTS Complete Upper Receiver w/o BCG AR-15 300 BO 17.5in 8.5in Pistol 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish Bronze XTSCU8300BR

XTS Complete Upper Receiver w/o BCG AR-15 300 BO 17.5in 8.5in Pistol 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish Bronze XTSCU8300BR. 5in AR15 300 Blackout upper comes FULLY ASSEMBLED With an Anchor Harvey Upper and an XTS Hand... ... more

XTS Complete Upper Receiver w/o BCG AR-15 300 BO 17.5in 8.5in Pistol 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish OD Green XTSCU8300OD

XTS Complete Upper Receiver w/o BCG AR-15 300 BO 17.5in 8.5in Pistol 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish OD Green XTSCU8300OD. 5in AR15 300 Blackout upper comes FULLY ASSEMBLED With an Anchor Harvey Upper and an XTS Hand... ... more

XTS Complete Upper Receiver w/o BCG AR-15 300 BO 17.5in 8.5in Pistol 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish Purple XTSCU8300PP

XTS Complete Upper Receiver w/o BCG AR-15 300 BO 17.5in 8.5in Pistol 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish Purple XTSCU8300PP. 5in AR15 300 Blackout upper comes FULLY ASSEMBLED With an Anchor Harvey Upper and an XTS Hand... ... more