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M4 Rear Sight

If you are looking for M4 Rear Sight, check out the products on this page. You might also like to browse through the categories listed on the left side of this page.

We now sell firearms from all of the popular manufacturers including Glock, S&W, Sig Sauer, Colt, and many others. If you need a gun for personal protection, hunting, competition or just plinking, we've got it at the best price you'll find anywhere.

Umarex Colt .22 Tactical Rimfire Tactical Rear Sight
7-2245121
$66.55
IN STOCK at Warehouses
7,8
GunTec Multi Aperture Rear Iron Sight
ARR-2515
$19.97
IN STOCK at Warehouse
1
Weaver AR-15 Carry Handle Black
6-0922271
$87.70
IN STOCK at Warehouses
3,4,6,8
Weaver AR-15 Carry Handle Black
3-0922271
$87.70
IN STOCK at Warehouses
3,4,6,8
Weaver AR-15 Carry Handle Black
8-WEAVER-48326
$81.73
IN STOCK at Warehouses
3,4,6,8
AR-15 Carry Handle Black Weaver Fits on AR-15 and M4 Upper Receiver Rail
47383
$69.35
IN STOCK at Warehouses
3,4,6,8
CMMG M4 LE Semi Auto Rifle .223 Rem/5.56 NATO 16  WASP Barrel 30 Rounds M4 Handguard Flip Up Rear Sight Collapsible Stock Black 55AE160
6-0137420
$825.37
IN STOCK at Warehouses
10,11,12,2,3,4,6,9
CMMG M4 LE Semi Auto Rifle .223 Rem/5.56 NATO 16  WASP Barrel 30 Rounds M4 Handguard Flip Up Rear Sight Collapsible Stock Black 55AE160
88913
$779.85
IN STOCK at Warehouses
10,11,12,2,3,4,6,9
CMMG M4 LE Semi Auto Rifle .223 Rem/5.56 NATO 16  WASP Barrel 30 Rounds M4 Handguard Flip Up Rear Sight Collapsible Stock Black 55AE160
9-89667
$755.98
IN STOCK at Warehouses
10,11,12,2,3,4,6,9
CMMG M4 LE Semi Auto Rifle .223 Rem/5.56 NATO 16  WASP Barrel 30 Rounds M4 Handguard Flip Up Rear Sight Collapsible Stock Black 55AE160
10-0137420
$825.37
IN STOCK at Warehouses
10,11,12,2,3,4,6,9
CMMG M4 LE Semi Auto Rifle .223 Rem/5.56 NATO 16  WASP Barrel 30 Rounds M4 Handguard Flip Up Rear Sight Collapsible Stock Black 55AE160
11-0137420
$825.37
IN STOCK at Warehouses
10,11,12,2,3,4,6,9
CMMG M4 LE Semi Auto Rifle .223 Rem/5.56 NATO 16  WASP Barrel 30 Rounds M4 Handguard Flip Up Rear Sight Collapsible Stock Black 55AE160
12-0137420
$825.37
IN STOCK at Warehouses
10,11,12,2,3,4,6,9
CMMG M4 LE Semi Auto Rifle .223 Rem/5.56 NATO 16  WASP Barrel 30 Rounds M4 Handguard Flip Up Rear Sight Collapsible Stock Black 55AE160
2-CMMG55AE160
$833.47
IN STOCK at Warehouses
10,11,12,2,3,4,6,9
CMMG M4 LE Semi Auto Rifle .223 Rem/5.56 NATO 16  WASP Barrel 30 Rounds M4 Handguard Flip Up Rear Sight Collapsible Stock Black 55AE160
3-0137420
$825.37
IN STOCK at Warehouses
10,11,12,2,3,4,6,9
Olympic Arms K3BM4A3 M4 AR-15 Carbine 5.56 NATO 30 Rounds 16  M4 Barrel A3 Upper with Removable Carry Handle and Rear Sight Black M4 Buttstock
38640
$901.99
IN STOCK at Warehouse
4
Troy Industries AR-15 Battle Sight Adjustment Tool
9-72015
$9.00
IN STOCK at Warehouses
10,11,3,6,9
Windham Weaponry MPC AR-15 Semi Auto Rifle .223 Rem/5.56mm NATO 16  M4 Profile Barrel Carbine Length Gas System Fixed Front Sight No Carry Handle Rear Flip-up Sight 30 Rounds Black R16M4LHRFT
2-WWR16M4LHRFT
$826.47
IN STOCK at Warehouses
10,11,2,3,6,7,8
Windham Weaponry MPC AR-15 Semi Auto Rifle .223 Rem/5.56mm NATO 16  M4 Profile Barrel Carbine Length Gas System Fixed Front Sight No Carry Handle Rear Flip-up Sight 30 Rounds Black R16M4LHRFT
8-WW-R16M4LHRFT
$814.96
IN STOCK at Warehouses
10,11,2,3,6,7,8
Spikes Tactical ST-15 LE Carbine AR-15 Semi Auto Rifle .223 Rem/5.56mm NATO 16  Barrel M4 Polymer Hand Guards A2 Front Sight Base M4 Stock Black STR5025-M4S
2-SPKSTR5025-M4S
$843.60
IN STOCK at Warehouse
2
Walther Rear Sight Colt M4 Tactical .22 Long Rifle Steel Black 576110
7-576110
$62.48
IN STOCK at Warehouses
4,7,9
Walther Rear Sight Colt M4 Tactical .22 Long Rifle Steel Black 576110
84743
$46.61
IN STOCK at Warehouses
4,7,9
Walther Rear Sight Colt M4 Tactical .22 Long Rifle Steel Black 576110
9-106825
$55.48
IN STOCK at Warehouses
4,7,9
Windham Weaponry AR-15 SRC 5.56mm NATO/.223 Rem16  M4 Barrel Front Sight Flat Top Receiver Complete Upper UR16M4LHPBB
9-102164
$513.91
IN STOCK at Warehouse
9
NcSTAR AR-15 Flip Up Rear Sight Dual Aiming Aperture Aluminum Black MARFLR
9-59754
$29.99
IN STOCK at Warehouses
10,6,9
NcSTAR AR-15 Flip Up Rear Sight Dual Aiming Aperture Aluminum Black MARFLR
6-1024585
$29.99
IN STOCK at Warehouses
10,6,9
Magpul MBUS Gen 2 Back Up Rear Sight Foliage Green AR15 M16
6-1028453
$57.95
IN STOCK at Warehouses
10,11,12,2,3,6
Magpul MBUS Gen 2 Back Up Rear Sight Foliage Green AR15 M16
10-1028453
$57.95
IN STOCK at Warehouses
10,11,12,2,3,6
Magpul MBUS Gen 2 Back Up Rear Sight Foliage Green AR15 M16
11-1028453
$57.95
IN STOCK at Warehouses
10,11,12,2,3,6
Magpul MBUS Gen 2 Back Up Rear Sight Foliage Green AR15 M16
12-1028453
$57.95
IN STOCK at Warehouses
10,11,12,2,3,6
Magpul MBUS Gen 2 Back Up Rear Sight Foliage Green AR15 M16
3-1028453
$57.95
IN STOCK at Warehouses
10,11,12,2,3,6
Magpul MBUS Gen 2 Back Up Rear Sight Foliage Green AR15 M16
2-MPIMAG248FOL
$55.05
IN STOCK at Warehouses
10,11,12,2,3,6
Colt 6920 AR-15 Semi Auto Rifle 5.56 NATO 16  M4 Barrel 30 Rounds M4 Stock Black LE6920
2-CTLE6920
$1,076.90
IN STOCK at Warehouses
2,4,7,8
Colt 6920 AR-15 Semi Auto Rifle 5.56 NATO 16  M4 Barrel 30 Rounds M4 Stock Black LE6920
8-CLT-LE6920
$1,076.90
IN STOCK at Warehouses
2,4,7,8
Colt 6920 AR-15 Semi Auto Rifle 5.56 NATO 16  M4 Barrel 30 Rounds M4 Stock Black LE6920
7-GLE6920
$1,076.90
IN STOCK at Warehouses
2,4,7,8
Colt 6920 AR-15 Semi Auto Rifle 5.56 NATO 16  M4 Barrel 30 Rounds M4 Stock Black LE6920
07000
$990.00
IN STOCK at Warehouses
2,4,7,8
Windham Weaponry MPC AR-15 Semi Auto Rifle .223 Rem/5.56mm NATO 16  M4 Profile Barrel Carbine Length Gas System Fixed Front Sight No Carry Handle Rear Flip-up Sight 30 Rounds Black R16M4LHRFT
7-G4383
$799.14
IN STOCK at Warehouses
10,11,2,3,6,7,8
Windham Weaponry MPC AR-15 Semi Auto Rifle .223 Rem/5.56mm NATO 16  M4 Profile Barrel Carbine Length Gas System Fixed Front Sight No Carry Handle Rear Flip-up Sight 30 Rounds Black R16M4LHRFT
10-0137271
$826.95
IN STOCK at Warehouses
10,11,2,3,6,7,8
Windham Weaponry MPC AR-15 Semi Auto Rifle .223 Rem/5.56mm NATO 16  M4 Profile Barrel Carbine Length Gas System Fixed Front Sight No Carry Handle Rear Flip-up Sight 30 Rounds Black R16M4LHRFT
11-0137271
$826.95
IN STOCK at Warehouses
10,11,2,3,6,7,8
Windham Weaponry MPC AR-15 Semi Auto Rifle .223 Rem/5.56mm NATO 16  M4 Profile Barrel Carbine Length Gas System Fixed Front Sight No Carry Handle Rear Flip-up Sight 30 Rounds Black R16M4LHRFT
6-0137271
$826.95
IN STOCK at Warehouses
10,11,2,3,6,7,8
Windham Weaponry MPC AR-15 Semi Auto Rifle .223 Rem/5.56mm NATO 16  M4 Profile Barrel Carbine Length Gas System Fixed Front Sight No Carry Handle Rear Flip-up Sight 30 Rounds Black R16M4LHRFT
3-0137271
$826.95
IN STOCK at Warehouses
10,11,2,3,6,7,8
M4 Rifle Kit Complete Less Lower, 16  M-4 Barrel 1x7  Twist Standard Carbine Handguards and 6 Position Stock
ARR-646
$499.97
IN STOCK at Warehouse
1
M4 Rifle Kit Complete Less Lower, 16  M-4 Barrel 1x9  Twist CAR Handguards and 6 Pos Stock
ARR-647
$499.97
IN STOCK at Warehouse
1
Aim Sports AR15/ M4 Combo Kit Quad Rail, Vertical Grip, Front And Rear Flip Up Sights ACAR01
88583
$63.23
IN STOCK at Warehouse
4
Troy Industries M7 5.56 Upper Receiver 7.5  Barrel Tritium M4 Folding Front Sight Folding Rear Sight Flat Dark Earth SM7A-CUK-00FT-00
9-71879
$1,525.00
IN STOCK at Warehouse
9
CMMG Mk9LE Semi Automatic Rifle 9mm Luger 16  M4 Barrel 32 Rounds Collapsible Stock M4 Handguard Black Finish 90A1A7D
2-CMMG90A1A7D
$956.00
IN STOCK at Warehouses
2,7
CMMG Mk9LE Semi Automatic Rifle 9mm Luger 16  M4 Barrel 32 Rounds Collapsible Stock M4 Handguard Black Finish 90A1A7D
7-G90A1A7D
$934.75
IN STOCK at Warehouses
2,7
Bushmaster M4A3  Post Ban  Semi Automatic Carbine .223 Remington/5.56x45mm NATO 14.5  M4 Barrel with Izzy Muzzle Brake 10 Rounds Black M4 Fixed Position Buttstock Black Anodized Finish
7-GPCWA3X14M
$971.19
IN STOCK at Warehouses
10,12,2,3,4,6,7
Bushmaster M4A3  Post Ban  Semi Automatic Carbine .223 Remington/5.56x45mm NATO 14.5  M4 Barrel with Izzy Muzzle Brake 10 Rounds Black M4 Fixed Position Buttstock Black Anodized Finish
29488
$971.83
IN STOCK at Warehouses
10,12,2,3,4,6,7
Bushmaster M4A3  Post Ban  Semi Automatic Carbine .223 Remington/5.56x45mm NATO 14.5  M4 Barrel with Izzy Muzzle Brake 10 Rounds Black M4 Fixed Position Buttstock Black Anodized Finish
2-BM90591
$972.35
IN STOCK at Warehouses
10,12,2,3,4,6,7
Bushmaster M4A3  Post Ban  Semi Automatic Carbine .223 Remington/5.56x45mm NATO 14.5  M4 Barrel with Izzy Muzzle Brake 10 Rounds Black M4 Fixed Position Buttstock Black Anodized Finish
10-0121869
$999.92
IN STOCK at Warehouses
10,12,2,3,4,6,7
Bushmaster M4A3  Post Ban  Semi Automatic Carbine .223 Remington/5.56x45mm NATO 14.5  M4 Barrel with Izzy Muzzle Brake 10 Rounds Black M4 Fixed Position Buttstock Black Anodized Finish
6-0121869
$999.92
IN STOCK at Warehouses
10,12,2,3,4,6,7
Bushmaster M4A3  Post Ban  Semi Automatic Carbine .223 Remington/5.56x45mm NATO 14.5  M4 Barrel with Izzy Muzzle Brake 10 Rounds Black M4 Fixed Position Buttstock Black Anodized Finish
3-0121869
$999.92
IN STOCK at Warehouses
10,12,2,3,4,6,7
Bushmaster MOE M4 Semi Auto Carbine .223 Remington/5.56x45mm NATO 16  M4 Barrel 30 Rounds Magpul MOE Stock Black Finish 90291
2-BM90291
$943.49
IN STOCK at Warehouses
10,11,12,2,3,6,4,7,8
Bushmaster MOE M4 Semi Auto Carbine .223 Remington/5.56x45mm NATO 16  M4 Barrel 30 Rounds Magpul MOE Stock Black Finish 90291
8-BF-90291
$1,045.52
IN STOCK at Warehouses
10,11,12,2,3,6,4,7,8
Bushmaster MOE M4 Semi Auto Carbine .223 Remington/5.56x45mm NATO 16  M4 Barrel 30 Rounds Magpul MOE Stock Black Finish 90291
7-G90291
$1,033.95
IN STOCK at Warehouses
10,11,12,2,3,6,4,7,8
Bushmaster MOE M4 Semi Auto Carbine .223 Remington/5.56x45mm NATO 16  M4 Barrel 30 Rounds Magpul MOE Stock Black Finish 90291
10-0130987
$926.85
IN STOCK at Warehouses
10,11,12,2,3,6,4,7,8
Bushmaster MOE M4 Semi Auto Carbine .223 Remington/5.56x45mm NATO 16  M4 Barrel 30 Rounds Magpul MOE Stock Black Finish 90291
63788
$987.90
IN STOCK at Warehouses
10,11,12,2,3,6,4,7,8
Bushmaster MOE M4 Semi Auto Carbine .223 Remington/5.56x45mm NATO 16  M4 Barrel 30 Rounds Magpul MOE Stock Black Finish 90291
11-0130987
$926.85
IN STOCK at Warehouses
10,11,12,2,3,6,4,7,8
Bushmaster MOE M4 Semi Auto Carbine .223 Remington/5.56x45mm NATO 16  M4 Barrel 30 Rounds Magpul MOE Stock Black Finish 90291
12-0130987
$926.85
IN STOCK at Warehouses
10,11,12,2,3,6,4,7,8
Bushmaster MOE M4 Semi Automatic Carbine .223 Remington/5.56x45mm NATO 16  M4 Barrel 30 Rounds Flat Dark Earth Magpul MOE Buttstock Black Anodized Finish
8-BF-90687
$1,045.52
IN STOCK at Warehouses
10,11,12,2,3,6,4,8
Olympic Arms K3B-M4 Semi Auto Rifle .223 Rem/5.56 NATO 16  Barrel 30 Rounds Fixed Carry Handle Collapsible Stock Black Finish K3BM4
38638
$825.09
IN STOCK at Warehouse
4
Bushmaster MOE M4 Semi Automatic Carbine .223 Remington/5.56x45mm NATO 16  M4 Barrel 30 Rounds Flat Dark Earth Magpul MOE Buttstock Black Anodized Finish
2-BM90687
$943.49
IN STOCK at Warehouses
10,11,12,2,3,6,4,8
Bushmaster MOE M4 Semi Automatic Carbine .223 Remington/5.56x45mm NATO 16  M4 Barrel 30 Rounds Flat Dark Earth Magpul MOE Buttstock Black Anodized Finish
10-0130932
$926.85
IN STOCK at Warehouses
10,11,12,2,3,6,4,8
Bushmaster MOE M4 Semi Automatic Carbine .223 Remington/5.56x45mm NATO 16  M4 Barrel 30 Rounds Flat Dark Earth Magpul MOE Buttstock Black Anodized Finish
63789
$987.90
IN STOCK at Warehouses
10,11,12,2,3,6,4,8
Bushmaster MOE M4 Semi Automatic Carbine .223 Remington/5.56x45mm NATO 16  M4 Barrel 30 Rounds Flat Dark Earth Magpul MOE Buttstock Black Anodized Finish
11-0130932
$926.85
IN STOCK at Warehouses
10,11,12,2,3,6,4,8
Bushmaster MOE M4 Semi Automatic Carbine .223 Remington/5.56x45mm NATO 16  M4 Barrel 30 Rounds Flat Dark Earth Magpul MOE Buttstock Black Anodized Finish
12-0130932
$926.85
IN STOCK at Warehouses
10,11,12,2,3,6,4,8
Bushmaster Carbon 15 M4 Semi Auto Carbine .223 Rem/5.56 NATO 16  Barrel 30 Round 6 Position Collapsible Stock M4 with Bayonet Lug and Izzy Compensator A2 Front Sight and Flip Up Rear Sight Black
8-BF-90728
$758.23
IN STOCK at Warehouse
8
Umarex Colt M4 OPS Semi Auto Rifle .22 LR 16  Barrel 30 Rounds Quad Rail Handguard Flat Top Upper Adjustable Rear Sight 576-03-02
2-WA576-03-02
$500.96
IN STOCK at Warehouses
10,11,2,3,4,6,7,8,9
Umarex Colt M4 OPS Semi Auto Rifle .22 LR 16  Barrel 30 Rounds Quad Rail Handguard Flat Top Upper Adjustable Rear Sight 576-03-02
3-0136997
$500.96
IN STOCK at Warehouses
10,11,2,3,4,6,7,8,9
Umarex Colt M4 OPS Semi Auto Rifle .22 LR 16  Barrel 30 Rounds Quad Rail Handguard Flat Top Upper Adjustable Rear Sight 576-03-02
6-0136997
$500.96
IN STOCK at Warehouses
10,11,2,3,4,6,7,8,9
Umarex Colt M4 OPS Semi Auto Rifle .22 LR 16  Barrel 30 Rounds Quad Rail Handguard Flat Top Upper Adjustable Rear Sight 576-03-02
7-G5760302
$500.96
IN STOCK at Warehouses
10,11,2,3,4,6,7,8,9
Umarex Colt M4 OPS Semi Auto Rifle .22 LR 16  Barrel 30 Rounds Quad Rail Handguard Flat Top Upper Adjustable Rear Sight 576-03-02
10-0136997
$500.96
IN STOCK at Warehouses
10,11,2,3,4,6,7,8,9
Umarex Colt M4 OPS Semi Auto Rifle .22 LR 16  Barrel 30 Rounds Quad Rail Handguard Flat Top Upper Adjustable Rear Sight 576-03-02
9-106787
$500.96
IN STOCK at Warehouses
10,11,2,3,4,6,7,8,9
Umarex Colt M4 OPS Semi Auto Rifle .22 LR 16  Barrel 30 Rounds Quad Rail Handguard Flat Top Upper Adjustable Rear Sight 576-03-02
84705
$500.96
IN STOCK at Warehouses
10,11,2,3,4,6,7,8,9
Umarex Colt M4 OPS Semi Auto Rifle .22 LR 16  Barrel 30 Rounds Quad Rail Handguard Flat Top Upper Adjustable Rear Sight 576-03-02
8-WAL-5760302
$459.94
IN STOCK at Warehouses
10,11,2,3,4,6,7,8,9
Umarex Colt M4 OPS Semi Auto Rifle .22 LR 16  Barrel 30 Rounds Quad Rail Handguard Flat Top Upper Adjustable Rear Sight 576-03-02
11-0136997
$500.96
IN STOCK at Warehouses
10,11,2,3,4,6,7,8,9
Bushmaster M4A3  Post Ban  Semi Auto Carbine .223 Rem/5.56 NATO 14.5  M4 Barrel with Pinned Compensator 10 Rounds Black Anodized Finish
12-0121869
$999.92
IN STOCK at Warehouses
10,12,2,3,4,6,7
Walther Folding Rear Sight Colt M4 Tactical Rimfire Picatinny Mount Steel Black 576112
7-576112
$32.98
IN STOCK at Warehouse
7
AR-15 Complete M4 Upper 5.56 NATO Nitride Treated 1x7  Twist Barrel  F  Marked Front Sight Tower Complete Bolt Charging Handle
ARR-649
$499.97
IN STOCK at Warehouse
1
Springfield XD(M) 4.5 Semi Automatic Pistol 9mm Luger 4.5  Barrel 19 Rounds Polymer Frame Black XDM9301HCSP
6-0214069
$669.32
IN STOCK at Warehouses
10,11,12,3,4,6,7,8
Springfield XD(M) 4.5 Semi Automatic Pistol 9mm Luger 4.5  Barrel 19 Rounds Polymer Frame Black XDM9301HCSP
60797
$668.44
IN STOCK at Warehouses
10,11,12,3,4,6,7,8
Springfield XD(M) 4.5 Semi Automatic Pistol 9mm Luger 4.5  Barrel 19 Rounds Polymer Frame Black XDM9301HCSP
7-GXDM9301HCSP
$669.11
IN STOCK at Warehouses
10,11,12,3,4,6,7,8
Springfield XD(M) 4.5 Semi Automatic Pistol 9mm Luger 4.5  Barrel 19 Rounds Polymer Frame Black XDM9301HCSP
8-SPR-XDM9301HCSP
$673.10
IN STOCK at Warehouses
10,11,12,3,4,6,7,8
Springfield XD(M) 4.5 Semi Automatic Pistol 9mm Luger 4.5  Barrel 19 Rounds Polymer Frame Black XDM9301HCSP
10-0214069
$669.32
IN STOCK at Warehouses
10,11,12,3,4,6,7,8
Springfield XD(M) 4.5 Semi Automatic Pistol 9mm Luger 4.5  Barrel 19 Rounds Polymer Frame Black XDM9301HCSP
11-0214069
$669.32
IN STOCK at Warehouses
10,11,12,3,4,6,7,8
Springfield XD(M) 4.5 Semi Automatic Pistol 9mm Luger 4.5  Barrel 19 Rounds Polymer Frame Black XDM9301HCSP
12-0214069
$669.32
IN STOCK at Warehouses
10,11,12,3,4,6,7,8
Springfield XD(M) 4.5 Semi Automatic Pistol 9mm Luger 4.5  Barrel 19 Rounds Polymer Frame Black XDM9301HCSP
3-0214069
$669.32
IN STOCK at Warehouses
10,11,12,3,4,6,7,8
Windham Weaponry AR-15 Complete Upper Assembly .223 Rem/5.56 NATO 16  M4 Barrel Carbine Length Gas System Fixed Front Sight Removable Carry Handle UR16M4A4B
8-WW-UR16M4A4B
$573.16
IN STOCK at Warehouses
4,8
Bushmaster MOE M4 Semi Auto Rifle .223 Rem/5.56 NATO 16  Chrome Lined Barrel 30 Rounds Black Magpul MOE Furniture MBUS Flip Up Sights Vertical Grip Black Finish 90291
6-0130987
$926.85
IN STOCK at Warehouses
10,11,12,2,3,6,4,7,8
 
 
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