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Upper Receivers & Barrels

Upper Receivers & Barrels
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Items 1-64 of 79

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  1. Colt AR15/M16A1 Receiver Extension/Buffer Tube *Excellent*
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    Colt AR-15 / M16A1 Receiver Extension / Buffer Tube, *Excellent*
    $65.00
  2. Colt AR15/M16A1 Receiver Pivot Pin, Front
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    Colt AR-15 / M16A1 Receiver Pivot Pin, Front, *Good*
    $12.50
  3. AR-15 / ZM4 Barrel Nut, Mil-Spec, by DS Arms, *NEW*
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    AR-15 / ZM4 Barrel Nut, Mil-Spec, by DS Arms, *NEW*
    $8.99
  4. Colt 601 M16 Upper Assembly, 20" Government Profile Barrel, Bolt Assembly, A1 Birdcage, 1/7 Twist 5.56x45 NATO *Very Good*
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    Colt 601 M16 Upper Assembly, 20" Government Profile Barrel, Bolt Assembly, A1 Birdcage, 1/7 Twist 5.56x45 NATO *Very Good*
    $2,495.00
  5. SIG-516 Piston Driven AR-15 Upper Receiver Assembly w/Bolt and Carrier, Charging Handle, Adjustable Gas system, Quad Rail, 10.5" Barrel 1/7 Twist, 5.56 NATO *Good*
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    SIG-516 Piston Driven AR-15 Upper Receiver Assembly w/Bolt and Carrier, Charging Handle, Adjustable Gas system, Quad Rail, 10.5" Barrel 1/7 Twist, 5.56 NATO *Good*
    $849.00
  6. Colt LE6921EPR-CK Upper W/Bolt Carrier Assembly & Charging Handle, 14.5" CL 1/7 BBL, CMR MLOK Rail, 5.56X45 NATO *New in Box*
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    Colt LE6921EPR-CK Upper W/Bolt Carrier Assembly & Charging Handle, 14.5" CL 1/7 BBL, CMR MLOK Rail, 5.56X45 NATO *New in Box*
    $1,169.00
  7. Colt M4 Carbine Upper Assembly, 16" Chrome Lined 1/7 Barrel, LE6920, 5.56X45 NATO *NEW in BOX*
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    Colt M4 Carbine Upper Assembly, 16" Chrome Lined 1/7 Barrel, LE6920, 5.56X45 NATO *NEW in BOX*
    $549.95
  8. Colt LE6920EPR-CK Upper W/Bolt Carrier Assembly & Charging Handle, 16" CL 1/7 BBL, MBUS Pro, CMR MLOK Rail, 5.56X45 NATO *New in Box*
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    Colt LE6920EPR-CK Upper W/Bolt Carrier Assembly & Charging Handle, 16" CL 1/7 BBL, MBUS Pro, CMR MLOK Rail, 5.56X45 NATO *New in Box*
    $1,249.00
  9. Colt 604 M16 Upper Assembly, 20" Pencil Barrel, A2 Round Handguards, 1966-1968, 5.56 NATO *Good*
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    Colt 604 M16 Upper Assembly, 20" Pencil Barrel, A2 Round Handguards, 1966-1968, 5.56 NATO *Good*
    $1,495.00
  10. Colt 604 M16 Upper Assembly, 20" Pencil Barrel, Triangle Handguards, No Ejection Port Cover, 1969-1970, 5.56 NATO *Good*
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    Colt 604 M16 Upper Assembly, 20" Pencil Barrel, Triangle Handguards, No Ejection Port Cover, 1969-1970, 5.56 NATO *Good*
    $1,465.00
  11. Colt 604 M16 Upper Assembly, 20" Pencil Barrel, Chrome Bore, A2 Handguards, 1970-1971 Production, 5.56 NATO *Good*
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    Colt 604 M16 Upper Assembly, 20" Pencil Barrel, Chrome Bore, A2 Handguards, 1970-1971 Production, 5.56 NATO *Good*
    $1,550.00
  12. Colt M16A4 Upper Assembly, 20" 1/7 Chrome Lined BBL, w/A4 Carry Handle, 5.56X45 NATO *NEW*
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    Colt M16A4 Upper Assembly, 20" 1/7 Chrome Lined BBL, w/A4 Carry Handle, 5.56X45 NATO *NEW*

    As low as $729.80

  13. Colt M16A4 Flat Top Upper Assembly, 20" 1/7 Twist Chrome Lined BBL, 5.56X45 NATO *NEW*
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    Colt M16A4 Flat Top Upper Assembly, 20" 1/7 Twist Chrome Lined BBL, 5.56X45 NATO *NEW*

    As low as $0.00

    Out of stock
  14. Colt 604 M16 Upper Assembly, 20" Government Profile Barrel, Slickside Bolt Assembly, No Ejection Port Cover, 5.56 NATO *Good*
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    Colt 604 M16 Upper Assembly, 20" Government Profile Barrel, Slickside Bolt Assembly, No Ejection Port Cover, 5.56 NATO *Good*
    $1,699.00
  15. Colt 604 M16 Upper Assembly, 20" Pencil Barrel, Triangle Handguards, Bolt Assembly, Charging Handle, 5.56 NATO *Good*
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    Colt 604 M16 Upper Assembly, 20" Pencil Barrel, Triangle Handguards, Bolt Assembly, Charging Handle, 5.56 NATO *Good*
    $1,845.00
  16. Colt 604 M16 Upper Assembly, 20" Pencil Barrel, Triangle Handguards, 5.56 NATO *Good*
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    Colt 604 M16 Upper Assembly, 20" Pencil Barrel, Triangle Handguards, 5.56 NATO *Good*
    $1,625.00
  17. Colt 604 M16 Upper, 20" Pencil Barrel, Chrome Bore, Cage Flash Hider, Triangle Handguards, Grey Finish 1970-1971 Production, 5.56 NATO *Good*
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    Colt 604 M16 Upper, 20" Pencil Barrel, Chrome Bore, Cage Flash Hider, Triangle Handguards, Grey Finish 1970-1971 Production, 5.56 NATO *Good*
    Special Price $1,250.00 Regular Price $1,425.00
  18. Colt 601 M16 Upper Assembly, 20" Pencil Barrel, Chrome Bolt Assy, Triangle Charging Handle, 5.56x45 NATO *Good*
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    Colt 601 M16 Upper Assembly, 20" Pencil Barrel, Chrome Bolt Assy, Triangle Charging Handle, 5.56x45 NATO *Good*
    Special Price $3,150.00 Regular Price $3,250.00
  19. Colt 601 M16 Upper Assembly, 20" Pencil Barrel, Chrome Bolt Assy, Triangle Charging Handle, Early Bend, Painted Receiver, 5.56x45 NATO *Good*
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    Colt 601 M16 Upper Assembly, 20" Pencil Barrel, Chrome Bolt Assy, Triangle Charging Handle, Early Bend, Painted Receiver, 5.56x45 NATO *Good*
    Special Price $2,850.00 Regular Price $3,150.00
  20. Colt 601 M16 Upper Assembly, 20" Pencil Barrel, 3-Prong "Duckbill" Flash Hider, Gray Finish, 5.56x45 NATO *Good*
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    Colt 601 M16 Upper Assembly, 20" Pencil Barrel, 3-Prong "Duckbill" Flash Hider, Gray Finish, 5.56x45 NATO *Good*
    $2,750.00
  21. SIG-516 Piston Driven AR-15 Upper Receiver Assembly w/Bolt and Carrier, Charging Handle, Adjustable Gas system, Quad Rail, 7.5" Barrel 1/7 Twist, 5.56 NATO *Very Good*
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    SIG-516 Piston Driven AR-15 Upper Receiver Assembly w/Bolt and Carrier, Charging Handle, Adjustable Gas system, Quad Rail, 7.5" Barrel 1/7 Twist, 5.56 NATO *Very Good*
    $929.00
  22. Colt AR-15 / SMG 9mm A2 Upper Receiver, No Parts Fitted, Muddy Girl Camo, 9X19 NATO *NEW*
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    Colt AR-15 / SMG 9mm A2 Upper Receiver, No Parts Fitted, Muddy Girl Camo, 9X19 NATO *NEW*
    Special Price $154.95 Regular Price $179.95
  23. Colt AR-15 / SMG 9mm A2 Upper Receiver with Dust Cover Assembly, Muddy Girl Camo, 9x19 NATO *NEW*
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    Colt AR-15 / SMG 9mm A2 Upper Receiver with Dust Cover Assembly, Muddy Girl Camo, 9x19 NATO *NEW*
    $193.50
  24. M16 Triangular Charging Handle, Early Type, Colt 601, Broken Latch *Good*
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    M16 Triangular Charging Handle, Early Type, Colt 601, Broken Latch *Good*
    $199.00
  25. Colt AR-15 / M16 Roll Pin, For Forward Assist Plunger *Very Good*
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    Colt AR-15 / M16 Roll Pin, For Forward Assist Plunger *Very Good*
    $1.99
  26. Colt AR15/M16A1 Receiver Takedown Pin, Rear
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    Colt AR-15 / M16A1 Receiver Takedown Pin, Rear
    $15.00
  27. Colt AR-15 / M16A1 / M4 Charging Handle Assembly *NEW*
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    Colt AR-15 / M16A1 / M4 Charging Handle Assembly *NEW*
    $59.95
  28. Colt AR-15 / M4 / M16 Carbine Gas Tube (9-3/4") With Front Sight Base *NEW*
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    Colt AR-15 / M4 / M16 Carbine Gas Tube (9-3/4") With Front Sight Base *NEW*
    $46.50
  29. Colt AR-15 / SMG 9mm Barrel Assembly, 16" 1/10 Chrome Lined, w/Nut, Front Sight, Sling Swivel, & Flash Hider *NIB*
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    Colt AR-15 / SMG 9mm Barrel Assembly, 16" 1/10 Chrome Lined, w/Nut, Front Sight, Sling Swivel, & Flash Hider *NIB*
    Out of stock
  30. Colt AR-15 / M16A1 Teardrop Forward Assist, Stripped, *Good*
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    Colt AR-15 / M16A1 Teardrop Forward Assist, Stripped, *Good*
    Out of stock
  31. Colt AR15/M16A1 Charging Handle Assembly *Good to Very Good*
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    Colt AR-15 / M16A1 Charging Handle Assembly, Early Colour, *Good*
    Out of stock
  32. AR-15 Pistol Barrel, 7 Inch, 1/9 RH Twist, 5.56mm, Stainless, *NEW*
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    AR-15 Pistol Barrel, 7 Inch, 1/9 RH Twist, 5.56mm, Stainless, *NEW*
    Out of stock
  33. AR-15 Pistol Barrel, 7 Inch, 1/10 RH Twist, 7.62X39, Nitrided, *NEW*
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    AR-15 Pistol Barrel, 7 Inch, 1/10 RH Twist, 7.62X39, Nitrided, *NEW*
    Out of stock
  34. AR-15 Pistol Barrel, 10.5 Inch, 1/10 RH Twist, 7.62X39, Nitrided, *NEW*
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    AR-15 Pistol Barrel, 10.5 Inch, 1/10 RH Twist, 7.62X39, Nitrided, *NEW*
    Out of stock
  35. AR-15 Pistol Barrel, 11.5 Inch, 1/7 RH Twist, 5.56mm, Nitrided, *NEW*
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    AR-15 Pistol Barrel, 11.5 Inch, 1/7 RH Twist, 5.56mm, Nitrided, *NEW*
    Out of stock
  36. AR-15 M4 Barrel, 16 Inch, 1/9 RH Twist, 5.56mm, Nitrided, *NEW*
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    AR-15 M4 Barrel, 16 Inch, 1/9 RH Twist, 5.56mm, Nitrided, *NEW*
    Out of stock
  37. M4 Carry Handle with Adjustable Sight, GI Issue, Very Good
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    M4 Carry Handle with Adjustable Sight, GI Issue, *Very Good*
    Out of stock
  38. Colt AR-15 / M16A1 Charging Handle, Gray / Refinished, *Very Good*
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    Colt AR-15 / M16A1 Charging Handle, Gray / Refinished, *Very Good*
    Out of stock
  39. AR-15 / M4 Heavy Barrel, No Extension, In The White, .223/5.56
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    AR-15 / M4 Heavy Barrel, No Extension, In The White, .223/5.56
    Out of stock
  40. AR-15 / M16 20" A2 Barrel, Take-Off, .223/5.56 *Good*
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    AR-15 / M16 20" A2 Barrel, Take-Off, .223/5.56 *Good*
    Out of stock
  41. Colt M4 Carbine Barrel Assembly, 14.5", 1/7 Twist, Chrome Lined w/Barrel Nut & Front Sight, 5.56X45 NATO *NEW in Box*
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    Colt M4 Carbine Barrel Assembly, 14.5", 1/7 Twist, Chrome Lined w/Barrel Nut & Front Sight, 5.56X45 NATO *NEW in Box*
    Out of stock
  42. Colt M4A1 SOCOM Barrel Assembly, 14.5", 1/7 Twist, Chrome Lined w/Barrel Nut & Front Sight, 5.56X45 NATO *Excellent / Blemished / In Box*
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    Colt M4A1 SOCOM Barrel Assembly, 14.5", 1/7 Twist, Chrome Lined w/Barrel Nut & Front Sight, 5.56X45 NATO *Excellent / Blemished / In Box*
    Out of stock
  43. Colt M4A1 SOCOM Barrel Assembly, 14.5", 1/7 Twist, Chrome Lined w/Barrel Nut & Front Sight, 5.56X45 NATO *NEW*
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    Colt M4A1 SOCOM Barrel Assembly, 14.5", 1/7 Twist, Chrome Lined w/Barrel Nut & Front Sight, 5.56X45 NATO *NEW*
    Out of stock
  44. Colt M4 COMMANDO Carbine Barrel Assembly, 11.5 Inch, 1/7 Twist, Chrome Lined w/ Barrel Nut & Front Sight, LE6933 Gov't Profile, 5.56X45 NATO *NEW in Box*
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    Colt M4 COMMANDO Carbine Barrel Assembly, 11.5 Inch, 1/7 Twist, Chrome Lined w/ Barrel Nut & Front Sight, LE6933 Gov't Profile, 5.56X45 NATO *NEW in Box*
    Out of stock
  45. Colt M4 Barrel Assembly, 16.1", 1/7 Twist, Chrome Lined w/ Barrel Nut & Front Sight, LE6920 Gov't Profile, 5.56X45 NATO *NEW in Box*
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    Colt M4 Barrel Assembly, 16.1", 1/7 Twist, Chrome Lined w/ Barrel Nut & Front Sight, LE6920 Gov't Profile, 5.56X45 NATO *NEW in Box*
    Out of stock
  46. Colt M4A1 SOCOM Barrel Assembly, 14.5", 1/7 Twist, Chrome Lined w/Barrel Nut & Front Sight, NO Swivel, 5.56X45 NATO *NEW*
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    Colt M4A1 SOCOM Barrel Assembly, 14.5", 1/7 Twist, Chrome Lined w/Barrel Nut & Front Sight, NO Swivel, 5.56X45 NATO *NEW*
    Out of stock
  47. Colt M4A1 SOCOM Barrel Assembly, 14.5", 1/7 Twist, Chrome Lined w/Barrel Nut & Front Sight, 5.56X45 NATO *Blem / New In Box*
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    Colt M4A1 SOCOM Barrel Assembly, 14.5", 1/7 Twist, Chrome Lined w/Barrel Nut & Front Sight, 5.56X45 NATO *Blem / New In Box*
    Out of stock
  48. Colt Heavy Barrel Assembly, HBAR, 11.5", 1/7 Twist, Chrome Lined w/Barrel Nut & Front Sight, 5.56X45 NATO *NEW*
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    Colt Heavy Barrel Assembly, HBAR, 11.5", 1/7 Twist, Chrome Lined w/Barrel Nut & Front Sight, 5.56X45 NATO *NEW*
    Out of stock
  49. Colt M16A2 Heavy Barrel Upper Assembly, 20" HBAR, Bolt Assembly, 1/7 Twist, 5.56x45 NATO *Good*
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    Colt M16A2 Heavy Barrel Upper Assembly, 20" HBAR, Bolt Assembly, 1/7 Twist, 5.56x45 NATO *Good*
    Out of stock
  50. Colt M16A2 Heavy Barrel Upper Assembly, 20" HBAR, Large Hole, 1/7 Twist, 5.56x45 NATO *Very Good*
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    Colt M16A2 Heavy Barrel Upper Assembly, 20" HBAR, Large Hole, 1/7 Twist, 5.56x45 NATO *Very Good*
    Out of stock
  51. Colt 604 M16 Upper Assembly, 20" Government Profile Barrel, Bolt Assembly, A1 Birdcage, 1/7 Twist 5.56x45 NATO *Very Good*
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    Colt 604 M16 Upper Assembly, 20" Government Profile Barrel, Bolt Assembly, A1 Birdcage, 1/7 Twist 5.56x45 NATO *Very Good*
    Out of stock
  52. Colt LE6933 M4 Commando Carbine Barrel w/Extension, Chrome Lined, 11.5" 1/7 Twist, 5.56X45 NATO *NEW*
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    Colt LE6933 M4 Commando Carbine Barrel w/Extension, Chrome Lined, 11.5" 1/7 Twist, 5.56X45 NATO *NEW*
    Rating:
    100%
    1 Review
    Out of stock
  53. Colt LE6933 M4 Commando Carbine Project Barrel w/Extension, Chrome Lined, 11.5" 1/7 Twist, Thin Muzzle Threads, 5.56X45 NATO *NEW*
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    Colt LE6933 M4 Commando Carbine Project Barrel w/Extension, Chrome Lined, 11.5" 1/7 Twist, Thin Muzzle Threads, 5.56X45 NATO *NEW*
    Out of stock
  54. Colt M4 LE6921 Carbine Upper Assembly, 14.5" 1/7 CL BBL, 5.56X45 NATO *NEW in BOX*
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    Colt M4 LE6921 Carbine Upper Assembly, 14.5" 1/7 CL BBL, 5.56X45 NATO *NEW in BOX*
    Rating:
    100%
    1 Review

    As low as $0.00

    Out of stock
  55. Colt M4 Carbine Barrel Assembly, Chrome Lined, 14.5" 1/7 Twist, w/Barrel Nut & Low Profile Gas Block , 5.56X45 NATO *NEW*
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    Colt M4 Carbine Barrel Assembly, Chrome Lined, 14.5" 1/7 Twist, w/Barrel Nut & Low Profile Gas Block , 5.56X45 NATO *NEW*
    Out of stock
  56. Smith & Wesson M&P 15 / AR-15 Upper Assembly, 14.5" 1/7 Twist Barrel, Quad Rail Handguards, Bolt Carrier Assembly, Charging Handle, 5.56X45 NATO *Good*
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    Smith & Wesson M&P 15 / AR-15 Upper Assembly, 14.5" 1/7 Twist Barrel, Quad Rail Handguards, Bolt Carrier Assembly, Charging Handle, 5.56X45 NATO *Good*
    Out of stock
  57. Colt AR-15 / SMG 9mm Barrel Assembly, 16" 1/10 Chrome Lined, w/Nut, Front Sight & Flash Hider *NEW*
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    Colt AR-15 / SMG 9mm Barrel Assembly, 16" 1/10 Chrome Lined, w/Nut, Front Sight & Flash Hider *NEW*
    Rating:
    100%
    1 Review
    Out of stock
  58. AR-15 Project Heavy Barrel Upper, 16" HBAR, Non-Threaded Muzzle, 5.56x45 NATO *Good*
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    AR-15 Project Heavy Barrel Upper, 16" HBAR, Non-Threaded Muzzle, 5.56x45 NATO *Good*
    Out of stock
  59. Colt 604 M16 Upper Assembly, 20" Barrel, 3-Prong Flash Hider, Bolt Assembly, Charging Handle, 1966-1969, Grey Finish. 5.56 NATO *Good*
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    Colt 604 M16 Upper Assembly, 20" Barrel, 3-Prong Flash Hider, Bolt Assembly, Charging Handle, 1966-1969, Grey Finish. 5.56 NATO *Good*
    Out of stock
  60. Colt 604 M16 Project Upper, 20" Pencil Barrel, Chrome Bore, Cage Flash Hider, Triangle Handguards, 1970-1971 Production, Ring in Bore, 5.56 NATO *As Is*
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    Colt 604 M16 Project Upper, 20" Pencil Barrel, Chrome Bore, Cage Flash Hider, Triangle Handguards, 1970-1971 Production, Ring in Bore, 5.56 NATO *As Is*
    Out of stock
  61. M4 / M16A2 Heavy Barrel Sporter Upper Assembly, 20" HBAR, No Bayonet Lug, 5.56x45 NATO *Good*
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    M4 / M16A2 Heavy Barrel Sporter Upper Assembly, 20" HBAR, No Bayonet Lug, 5.56x45 NATO *Good*
    Out of stock
  62. Colt 604 M16 Upper Assembly, 20" Pencil Barrel, Chrome Bore, Cage Flash Hider, Late Triangle Handguards, Grey Finish, 5.56 NATO *Good*
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    Colt 604 M16 Upper Assembly, 20" Pencil Barrel, Chrome Bore, Cage Flash Hider, Late Triangle Handguards, Grey Finish, 5.56 NATO *Good*
    Out of stock
  63. Colt 604 M16 Upper Assembly, 20" Pencil Barrel, Triangle Handguards, Refinished, 5.56 NATO *Good*
    Add to Compare
    Colt 604 M16 Upper Assembly, 20" Pencil Barrel, Triangle Handguards, Refinished, 5.56 NATO *Good*
    Out of stock
  64. Colt M16A1 Carbine Buffer Tube, 3-Position, With Early Castle Nut & Receiver Section *Good*
    Add to Compare
    Colt M16A1 Carbine Buffer Tube, 3-Position, With Early Castle Nut & Receiver Section *Good*
    Out of stock
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  4. $3,000.00 - $3,999.99 1 item
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  5. 16" 4 item
  6. 20" 9 item
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