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Gas Block and Front Sight

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At Cheaper Than Dirt! you'll find the world's largest collection of firearms-related products. With tens of thousands of products, several warehouses, and the lowest prices on the planet, you'll find everything you need at Cheaper Than Dirt!

NcSTAR AR-15 Flip Up Front Sight for Picatinny Gas Blocks MARFLF
3-1024584
$29.99
IN STOCK at Warehouses
10,3,6,9
NcSTAR AR-15 Flip Up Front Sight for Picatinny Gas Blocks MARFLF
6-1024584
$29.99
IN STOCK at Warehouses
10,3,6,9
NcSTAR AR-15 Flip Up Front Sight for Picatinny Gas Blocks MARFLF
10-1024584
$29.99
IN STOCK at Warehouses
10,3,6,9
Troy BattleSight Front Flip Up Sight Front Gas Block Mounting M4 Style with QD Points Steel Black
77148
$96.83
IN STOCK at Warehouses
10,11,3,4,6,9
Diamondhead USA AR-15 Receiver Height Gas Block with Rail Overhang.750  Steel Black 3101
6-1030236
$62.91
IN STOCK at Warehouses
10,11,2,3,6,8
Midwest Industries BUIS AR15 Flip Up Front Sight Gas Block Mount Picatinny OD Green
2-MWMCTARFFGOD
$79.95
IN STOCK at Warehouse
2
Midwest Industries AR15 BUIS Flip Up Front Sight Gas Block Mount Picatinny Flat Dark Earth
2-MWMCTARFFGFD
$79.95
IN STOCK at Warehouse
2
Midwest Industries AR15 BUIS Low Profile Flip-Up Front Sight Gas Block Picatinny Black
2-MWMI-LFFG
$89.95
IN STOCK at Warehouses
2,7
AR-15 Gas Block Koelbl Single Rail .936  DPMS Aluminum Picatinny Rail Mil Spec Black Phosphate Coating
ARR-446
$29.97
IN STOCK at Warehouse
1
Troy Industries AR-15 HK Style Front Gas Block BattleSight Flat Dark Earth SSIG-GBF-00FT-00
77147
$96.83
IN STOCK at Warehouses
4,7,9
TRUGLO Fiber Optic AR-15 Front Gas Block Sight TG115
6-1023506
$61.82
IN STOCK at Warehouses
10,11,2,20,3,4,6,7,8
TRUGLO Fiber Optic AR-15 Front Gas Block Sight TG115
7-TG115
$49.45
IN STOCK at Warehouses
10,11,2,20,3,4,6,7,8
Diamondhead DIAMOND AR-15 Flip-Up Front Combat Sight Gas Block Height Black 1551
7-DH1551
$113.05
IN STOCK at Warehouses
10,11,2,3,6,7,9
Diamondhead DIAMOND AR-15 Flip-Up Front Combat Sight Gas Block Height Black 1551
9-105520
$113.05
IN STOCK at Warehouses
10,11,2,3,6,7,9
Diamondhead DIAMOND AR-15 Flip-Up Front Combat Sight Gas Block Height Black 1551
2-DMD1551
$113.05
IN STOCK at Warehouses
10,11,2,3,6,7,9
Diamondhead DIAMOND AR-15 Flip-Up Front Combat Sight Gas Block Height Black 1551
6-1030222
$113.05
IN STOCK at Warehouses
10,11,2,3,6,7,9
Diamondhead DIAMOND AR-15 Flip-Up Front Combat Sight Gas Block Height Black 1551
3-1030222
$113.05
IN STOCK at Warehouses
10,11,2,3,6,7,9
Diamondhead DIAMOND AR-15 Flip-Up Front Combat Sight Gas Block Height Black 1551
11-1030222
$113.05
IN STOCK at Warehouses
10,11,2,3,6,7,9
Diamondhead DIAMOND AR-15 Flip-Up Front Combat Sight Gas Block Height Black 1551
10-1030222
$113.05
IN STOCK at Warehouses
10,11,2,3,6,7,9
GG&G AR15 BUIS A2 Front Flip-up Gas Block Sight  for Dovetails Black
2-GGG1297
$150.85
IN STOCK at Warehouse
2
M4 Troy Industries Front Gas Block Mounted BattleSight, FDE
77149
$96.83
IN STOCK at Warehouses
4,9
Midwest Industries AR-15 BUIS Flip Up Front Sight Gas Block Mount Picatinny Black MCTAR-FFG-BLK
7-MCTARFFG
$79.95
IN STOCK at Warehouses
2,7
Midwest Industries AR-15 BUIS Flip Up Front Sight Gas Block Mount Picatinny Black MCTAR-FFG-BLK
2-MWMCTARFFG
$79.95
IN STOCK at Warehouses
2,7
Troy Industries M4 Front Gas Block BattleSight Picatinny Black SSIG-GBF-0MBT-00
9-71986
$129.00
IN STOCK at Warehouses
10,11,3,4,6,9
M4 Troy Industries Front Gas Block Mounted BattleSight, FDE
9-71988
$129.00
IN STOCK at Warehouses
4,9
Midwest Industries AR-15 .750 Diameter Upper Height Railed Gas Block Steel Black MCTAR-UHGB
2-MWMCTARUHGB
$64.95
IN STOCK at Warehouses
2,7
Midwest Industries AR-15 .750 Diameter Upper Height Railed Gas Block Steel Black MCTAR-UHGB
7-MCTARUHGB
$64.95
IN STOCK at Warehouses
2,7
UTG Model 4 Detachable Front Sight for Reg Height Gas Block
16-MNT-750
$13.75
IN STOCK at Warehouse
16
Troy Industries Low Profile Gas Block .936 Black SGAS-936-00BT-00
9-71860
$39.00
IN STOCK at Warehouses
7,9
Troy Industries Low Profile Gas Block .875 Black SGAS-875-00BT-00
7-T14578
$32.07
IN STOCK at Warehouse
7
Troy Industries Low Profile Gas Block .936 Black SGAS-936-00BT-00
7-T14349
$32.07
IN STOCK at Warehouses
7,9
UTG Model 4 Flip-up Front Sight for Reg Height Gas Block
16-MNT-751
$14.85
IN STOCK at Warehouses
16,2,8
Diamondhead AR-15 Gas Block Height Integrated Sighting System Set 1599
3-1030225
$235.60
IN STOCK at Warehouses
10,11,3,6,7,8,9
Diamondhead AR-15 Gas Block Height Integrated Sighting System Set 1599
6-1030225
$235.60
IN STOCK at Warehouses
10,11,3,6,7,8,9
Diamondhead AR-15 Gas Block Height Integrated Sighting System Set 1599
7-DH1599
$235.60
IN STOCK at Warehouses
10,11,3,6,7,8,9
Diamondhead AR-15 Gas Block Height Integrated Sighting System Set 1599
8-DH-1599
$235.60
IN STOCK at Warehouses
10,11,3,6,7,8,9
AR-15 Four Rail Gas Block .750  Diameter DPMS Black Aluminum 2  Long U.S. Made
ARR-576
$29.97
IN STOCK at Warehouse
1
Troy Industries AR-15 Front Folding HK Style Gas Block Tritium Sight Black SSIG-GBF-00BT-01
9-71983
$174.00
IN STOCK at Warehouses
4,9
Troy Industries AR-15 Front Folding HK Style Gas Block Tritium Sight Black SSIG-GBF-00BT-01
85851
$130.61
IN STOCK at Warehouses
4,9
AR-15 Gas Block Koelbl Single Rail .750  DPMS Aluminum Picatinny Rail Mil Spec Black Phosphate Coating
ARR-445
$29.97
IN STOCK at Warehouse
1
Troy Industries M4 Front Gas Block BattleSight Picatinny Black
6-1028909
$110.19
IN STOCK at Warehouses
10,11,3,4,6,9
Troy Industries M4 Front Gas Block BattleSight Picatinny Black
11-1028909
$110.19
IN STOCK at Warehouses
10,11,3,4,6,9
Troy Industries M4 Front Gas Block BattleSight Picatinny Black
10-1028909
$110.19
IN STOCK at Warehouses
10,11,3,4,6,9
Troy Industries M4 Front Gas Block BattleSight Picatinny Black
3-1028909
$110.19
IN STOCK at Warehouses
10,11,3,4,6,9
The TRUGLO Tactical AR-15 gas block sight is the industry’s BRIGHTEST AR-15 fiber-optic gun sight. 
Extra long, super bright, protected green fiber. Integral mount for Mil-Spec. 1913 Picatinny rails. 
Designed to mount on front gas blocks. Includes opt
8-TG-TG115
$45.78
IN STOCK at Warehouses
10,11,2,20,3,4,6,7,8
AR-15 Gas Block Flip Front Sight Yankee Hill Machine Works With Standard Profile Gas Block Rails Only
ARR-9584
$69.97
IN STOCK at Warehouse
1
AR-15 Four Rail Gas Block .936  Diameter DPMS Black Aluminum 1 7/8  Long For Bull Barrels
ARR-567
$19.93
IN STOCK at Warehouse
1
Midwest Industries Low Profile Gas Block .750 Barrels Aluminum Black MI-MGB-750
2-MWMI-MGB-750
$37.50
IN STOCK at Warehouse
2
Troy Industries AR-15 HK Style Front Gas Block BattleSight Flat Dark Earth SSIG-GBF-00FT-00
7-T11799
$106.07
IN STOCK at Warehouses
4,7,9
Diamondhead AR-15 Gas Block Height Integrated Sighting System Set 1599
9-105526
$235.60
IN STOCK at Warehouses
10,11,3,6,7,8,9
Diamondhead AR-15 Gas Block Height Integrated Sighting System Set 1599
11-1030225
$235.60
IN STOCK at Warehouses
10,11,3,6,7,8,9
Diamondhead AR-10 Gas Block Height Integrated Sighting System Set 1699
9-105527
$235.60
IN STOCK at Warehouses
7,9
Diamondhead AR-10 Gas Block Height Integrated Sighting System Set 1699
7-DH1699
$235.60
IN STOCK at Warehouses
7,9
Diamondhead AR-15 Gas Block Height Integrated Sighting System Set 1599
10-1030225
$235.60
IN STOCK at Warehouses
10,11,3,6,7,8,9
Leapers UTG PRO AR-15 Gas Block Low Profile Quad-Rail For .75  Barrel Aircraft Aluminum
2-UTGMTU012
$32.97
IN STOCK at Warehouses
16,2
Diamondhead USA AR-15 .750  Low Profile Gas Block Steel Black Oxide 3131
2-DMD3131
$33.25
IN STOCK at Warehouses
10,2,3,6,8
Diamondhead USA AR-15 .750  Low Profile Gas Block Steel Black Oxide 3131
6-1030261
$38.01
IN STOCK at Warehouses
10,2,3,6,8
Diamondhead USA AR-15 .750  Low Profile Gas Block Steel Black Oxide 3131
10-1030261
$38.01
IN STOCK at Warehouses
10,2,3,6,8
Diamondhead USA AR-15 .750  Low Profile Gas Block Steel Black Oxide 3131
3-1030261
$38.01
IN STOCK at Warehouses
10,2,3,6,8
Diamondhead USA AR-15 .750  Low Profile Gas Block Steel Black Oxide 3131
8-DH-3131
$33.25
IN STOCK at Warehouses
10,2,3,6,8
Diamondhead USA AR-15 Receiver Height Gas Block with Rail Overhang.750  Steel Black 3101
2-DMD3101
$56.05
IN STOCK at Warehouses
10,11,2,3,6,8
Diamondhead USA AR-15 Receiver Height Gas Block with Rail Overhang.750  Steel Black 3101
10-1030236
$62.91
IN STOCK at Warehouses
10,11,2,3,6,8
Diamondhead USA AR-15 Receiver Height Gas Block with Rail Overhang.750  Steel Black 3101
3-1030236
$62.91
IN STOCK at Warehouses
10,11,2,3,6,8
Diamondhead USA AR-15 Receiver Height Gas Block with Rail Overhang.750  Steel Black 3101
11-1030236
$62.91
IN STOCK at Warehouses
10,11,2,3,6,8
Diamondhead USA AR-15 Receiver Height Gas Block with Rail Overhang.750  Steel Black 3101
8-DH-3101
$56.05
IN STOCK at Warehouses
10,11,2,3,6,8
Diamondhead Diamond AR-10 Gas Block Height Front Combat Sight 6061-T6 Aluminum Black 1651
2-DMD1651
$113.05
IN STOCK at Warehouses
10,11,2,3,6,9
Diamondhead Diamond AR-10 Gas Block Height Front Combat Sight 6061-T6 Aluminum Black 1651
11-1030223
$113.05
IN STOCK at Warehouses
10,11,2,3,6,9
Diamondhead Diamond AR-10 Gas Block Height Front Combat Sight 6061-T6 Aluminum Black 1651
9-105521
$113.05
IN STOCK at Warehouses
10,11,2,3,6,9
GG&G AR15 BUIS Front Flip-Up Sight for Dovetail Gas Block Black
2-GGG1023
$105.64
IN STOCK at Warehouse
2
A.R.M.S. #41-B Silhouette Folding Front Sight with Integral Gas Block
2-ARMS41-B
$150.02
IN STOCK at Warehouse
2
Troy Industries AR-15 HK Style Front Gas Block BattleSight Flat Dark Earth SSIG-GBF-00FT-00
9-71984
$129.00
IN STOCK at Warehouses
4,7,9
TRUGLO Fiber Optic AR-15 Front Gas Block Sight TG115
58978
$47.39
IN STOCK at Warehouses
10,11,2,20,3,4,6,7,8
TRUGLO Fiber Optic AR-15 Front Gas Block Sight TG115
2-TG115
$48.65
IN STOCK at Warehouses
10,11,2,20,3,4,6,7,8
TRUGLO Fiber Optic AR-15 Front Gas Block Sight TG115
11-1023506
$61.82
IN STOCK at Warehouses
10,11,2,20,3,4,6,7,8
TRUGLO Fiber Optic AR-15 Front Gas Block Sight TG115
10-1023506
$61.82
IN STOCK at Warehouses
10,11,2,20,3,4,6,7,8
TRUGLO Fiber Optic AR-15 Front Gas Block Sight TG115
9-88756
$47.84
IN STOCK at Warehouses
10,11,2,20,3,4,6,7,8
TRUGLO Fiber Optic AR-15 Front Gas Block Sight TG115
20-TG115
$57.83
IN STOCK at Warehouses
10,11,2,20,3,4,6,7,8
TRUGLO Fiber Optic AR-15 Front Gas Block Sight TG115
3-1023506
$61.82
IN STOCK at Warehouses
10,11,2,20,3,4,6,7,8
NcSTAR AR-15 Flip Up Front Sight for Picatinny Gas Blocks MARFLF
9-59753
$29.99
IN STOCK at Warehouses
10,3,6,9
Troy BattleSight Front Flip Up Sight Front Gas Block Mounting HK Style with QD Points Steel Black SSIG-GBF-00BT-00
9-71982
$129.00
IN STOCK at Warehouses
4,7,9
Troy BattleSight Front Flip Up Sight Front Gas Block Mounting HK Style with QD Points Steel Black SSIG-GBF-00BT-00
77146
$96.83
IN STOCK at Warehouses
4,7,9
Troy BattleSight Front Flip Up Sight Front Gas Block Mounting HK Style with QD Points Steel Black SSIG-GBF-00BT-00
7-T11782
$106.07
IN STOCK at Warehouses
4,7,9
Midwest Industries Low Profile Flip Up Front Sight for AR-15 Gas Block Aluminum Black MI-LFFG
7-MILFFG
$89.95
IN STOCK at Warehouses
2,7
Troy Industries AR-15 Low Profile Gas Block .750 Steel Black SGAS-A4L-00BT-00
2-TRYSGASA4L00BT00
$26.73
IN STOCK at Warehouses
2,3,4,7
Troy Industries AR-15 Low Profile Gas Block .750 Steel Black SGAS-A4L-00BT-00
3-1028939
$32.60
IN STOCK at Warehouses
2,3,4,7
Troy Industries AR-15 Low Profile Gas Block .750 Steel Black SGAS-A4L-00BT-00
7-T10136
$28.78
IN STOCK at Warehouses
2,3,4,7
Rock River Arms Flip Front Sight Gas Block Assembly Matte Black AR3330ASY
90958
$102.47
IN STOCK at Warehouse
4
Troy Industries AR-15 Low Profile Gas Block .750 Steel Black SGAS-A4L-00BT-00
60520
$27.24
IN STOCK at Warehouses
2,3,4,7
ProMag AR-15 Flip Up Front Gas Block Sight Adjustable for Elevation Quick Detach Polymer
2-PM238
$37.90
IN STOCK at Warehouse
2
Diamondhead Diamond AR-10 Gas Block Height Front Combat Sight 6061-T6 Aluminum Black 1651
3-1030223
$113.05
IN STOCK at Warehouses
10,11,2,3,6,9
 
 
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