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Adams Arms Ar-15/M16 5.56 16 Basic Piston Upper Receivers

Adams Arms Ar-15/M16 5.56 16"" Basic Piston Upper Receivers

Buy from Brownells

Complete Base upper receiver assembly comes ready to install on mil-spec lower receiver to produce a reliable, positive-cycling gas piston gun. Adams Arms proven piston system doesnt vent hot gases and burned powder into the bolt carrier and receiver, so the gun runs cooler, with less fouling and wear on the action, and easier maintenance. Short-stroke piston shaft eliminates concussive gas expansion in the upper receiver for less violent cycling, smoother feeding, and reduced felt recoil. The receiver is forged from 6061 T6 aluminum and features M4 feed ramp cuts and a 13-slot Picatinny-cut... [more info]
Radical Firearms Ar-15 Upper Receiver Assembly 5.56 M4 16 Carbine

Radical Firearms Ar-15 Upper Receiver Assembly 5.56 M4 16"" Carbine

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The Radical Firearms M4 16 Upper Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver! This fully mil-spec compliant receiver... [more info]
Radical Firearms Ar-15 Upper Receiver Assembly 5.56 Socom 16 Midlength

Radical Firearms Ar-15 Upper Receiver Assembly 5.56 Socom 16"" Midlength

Buy from Brownells

The Radical Firearms SOCOM Upper Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver! This fully mil-spec compliant receiver... [more info]
Upper Bounce Inc. UBESOS7. 56 Upper Bounce 6 Pole Trampoline Enclosure Set to fit 7. 5 FT. Trampoline Frames with set of 3

Upper Bounce Inc. UBESOS7. 56 Upper Bounce 6 Pole Trampoline Enclosure Set to fit 7. 5 FT. Trampoline Frames with set of 3

Buy from Walmart US

Trampoline Safety Fail Trampoline Enclosure Set is a must to have to ensure the maximum safety for your kids and their friends! Get this Upper Bounce High Quality Trampoline Safety Enclosure Set so... [more info]
Anderson, 5.56 NATO Barrel, 7.5 EXT M4 Upper Receiver, No BCG or Charging Handle

Anderson, 5.56 NATO Barrel, 7.5" EXT M4 Upper Receiver, No BCG or Charging Handle

Buy from The Sportsman's Guide

Anderson, 5.56 NATO Barrel, 7.5 EXT M4 Upper Receiver, No BCG or Charging Handle [more info]
Brownells Ar-15 Complete Upper Receiver Black Keymod 5.56

Brownells Ar-15 Complete Upper Receiver Black Keymod 5.56

Buy from Brownells

This Brownells exclusive Complete AR Upper Receiver is Made in the USA. Chambered in 5.56x45mm NATO and featuring a 16 barrel with a 1:8 twist. The standard A3 13-slot aluminum flat top receiver... [more info]
Brownells Ar-15 Complete Upper Keymod 5.56 W/ 5-Pk 30-Rd Pmag

Brownells Ar-15 Complete Upper Keymod 5.56 W/ 5-Pk 30-Rd Pmag

Buy from Brownells

This Brownells exclusive Complete AR Upper Receiver is Made in the USA. Chambered in 5.56x45mm NATO and featuring a 16 barrel with a 1:8 twist. The standard A3 13-slot aluminum flat top receiver... [more info]
Yankee Hill Machine Co., Inc. Ar-15 5.56 16 Black Diamond Specter Upper Receiver

Yankee Hill Machine Co., Inc. Ar-15 5.56 16"" Black Diamond Specter Upper Receiver

Buy from Brownells

Flattop upper comes with high-end custom features and accessories already installed, ready to snap on the mil-spec lower receiver of your choice. Comes fully assembled with bolt/carrier, charging... [more info]
Upper Bounce UBMAT-10-56-5.5 Trampoline Jumping Mat fits for 10 FT. Round Frames with 56 V-Rings Using 5.5 springs (springs not included)

Upper Bounce UBMAT-10-56-5.5 Trampoline Jumping Mat fits for 10 FT. Round Frames with 56 V-Rings Using 5.5 springs (springs not included)

Buy from 123Greetings.com

Upper Bounce UBMAT-10-56-5.5 Trampoline Jumping Mat fits for 10 FT. Round Frames with 56 V-Rings Using 5.5 springs (springs not included) back your Trampoline bounce with this New & Strong Upper... [more info]
Upper Bounce UBMAT-8-56-5.5 - 8 Trampoline Jumping Mat fits for 8 FT. Round Frames - Black

Upper Bounce UBMAT-8-56-5.5 - 8' Trampoline Jumping Mat fits for 8 FT. Round Frames - Black

Buy from 123Greetings.com

Upper Bounce UBMAT-8-56-5.5 - 8 Trampoline Jumping Mat fits for 8 FT. Round Frames - Black Bring back your Trampoline bounce with this New & Strong Upper Bounce Trampoline Jumping Mat! Upper... [more info]
Hafele 942.56.940 Aluminum Upper Track Hafele 942.56.940 HAWA 13-Foot 1.5-Inch Long Aluminum Upper Track for Top Hung 5

Hafele 942.56.940 Aluminum Upper Track Hafele 942.56.940 HAWA 13-Foot 1.5-Inch Long Aluminum Upper Track for Top Hung 5

Buy from Build.com

Hafele, 942.56.940, Top Hung, HAWA, Sliding Door Hardware, Upper Track, HAWA Collection 13 1.5 Long Aluminum Upper Track for Top Hung 550 Lb. Wood Doors Create a versatile sliding door system with... [more info]
CMMG Mk4LE 5.56 AR-15 Upper Receiver Group

CMMG Mk4LE 5.56 AR-15 Upper Receiver Group

Buy from Bass Pro Shops

The CMMG Mk4LE 5.56 AR-15 Upper Receiver Group features a 16.1, M4 profile, 4140 chrome-moly steel barrel. A salt bath nitrided finish is applied to the barrel inside and out, along with the front... [more info]
Yankee Hill 110-BILLET Billet Upper Receiver 223 Rem/5.56 NATO, Black

Yankee Hill 110-BILLET Billet Upper Receiver 223 Rem/5.56 NATO, Black

Buy from Walmart US

Yankee Hill 110-BILLET Billet Upper Receiver 223 Rem/5.56 NATO, Black: Type: Caliber: 223 Remington/5.56 NATOSights: None (Optic Ready) Receiver Description: 7075-T6 Aluminum M4Receiver Finish:... [more info]