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Shop 27 Deals on Primary Weapons Systems Receivers

Browse Primary Weapons Systems Receivers for sale at the lowest prices online.

Upper Receivers

Complete Uppers

Lower Receivers

5mm Remington Rimfire Magnum

5.56×45mm NATO

Primary Weapons Systems MK116 Mod 1-M 16.10" Upper .223 Wylde 1:8 M-LOK Rail, Black - Primary Weapons Systems

Primary Weapons Systems MK116 Mod 1-M 16.10" Upper .223 Wylde 1:8 M-LOK Rail, Black

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Primary Weapons Systems

Primary Weapons Systems MK1 Mod 2-M Stripped Lower 5.56x45mm, Black - Primary Weapons Systems

Primary Weapons Systems MK1 Mod 2-M Stripped Lower 5.56x45mm, Black

Primary Weapons Systems

Primary Weapons Systems MK114 Mod 1-M 14.50" Upper .223 Wylde 1:8 M-LOK Rail Mid-Length, Black - Primary Weapons Systems

Primary Weapons Systems MK114 Mod 1-M 14.50" Upper .223 Wylde 1:8 M-LOK Rail Mid-Length, Black

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Primary Weapons Systems

Primary Weapons Systems MK1 Mod 2-M Complete Lower 5.56x45mm, Black - Primary Weapons Systems

Primary Weapons Systems MK1 Mod 2-M Complete Lower 5.56x45mm, Black

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Primary Weapons Systems

Primary Weapons Systems MK114 MOD2-M Upper Receiver .223 Wylde 14.5in bbl No Compensator Black - Primary Weapons Systems

Primary Weapons Systems MK114 MOD2-M Upper Receiver .223 Wylde 14.5in bbl No Compensator Black

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Primary Weapons Systems

Primary Weapons Systems MK116 Pro Upper 223 Wylde/556NATO 16.1" Barrel, Black - 19-PM116UA0B - Primary Weapons Systems

Primary Weapons Systems MK116 Pro Upper 223 Wylde/556NATO 16.1" Barrel, Black - 19-PM116UA0B

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Primary Weapons Systems

Primary Weapons Systems MK114 Mod 1-M 14.50" Upper .223 Wylde 1:8 M-LOK Mid-Length with Charging Handle, Black - Precision Accuracy - M114UA01-2F-NC - Primary Weapons Systems

Primary Weapons Systems MK114 Mod 1-M 14.50" Upper .223 Wylde 1:8 M-LOK Mid-Length with Charging Handle, Black - Precision Accuracy - M114UA01-2F-NC

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Primary Weapons Systems

Primary Weapons Systems MK114 Mod 2-M Upper .223 Wylde 14.5 Barrel - Primary Weapons Systems

Primary Weapons Systems MK114 Mod 2-M Upper .223 Wylde 14.5 Barrel

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Primary Weapons Systems

Primary Weapons Systems MK111 Pro Upper .223 Wylde 11.85 Barrel - Primary Weapons Systems

Primary Weapons Systems MK111 Pro Upper .223 Wylde 11.85 Barrel

$824.95 $615.00

Primary Weapons Systems

Primary Weapons Systems MK116 MOD 1-M .223 Wylde 16" Barrel Complete Upper, Chrome-Lined Black - M116UA0B - Primary Weapons Systems

Primary Weapons Systems MK116 MOD 1-M .223 Wylde 16" Barrel Complete Upper, Chrome-Lined Black - M116UA0B

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Primary Weapons Systems

Primary Weapons Systems MK111 MOD 2-M .223 Wylde 11.85" Barrel Complete Upper, Black - 182M111UA0B - Primary Weapons Systems

Primary Weapons Systems MK111 MOD 2-M .223 Wylde 11.85" Barrel Complete Upper, Black - 182M111UA0B

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Primary Weapons Systems

Primary Weapons Systems MK111 Mod 1-M 11.85" Upper .223 Wylde M-LOK Rail, Black - Primary Weapons Systems

Primary Weapons Systems MK111 Mod 1-M 11.85" Upper .223 Wylde M-LOK Rail, Black

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Primary Weapons Systems

Primary Weapons Systems MK116 .223 Wylde Upper with 16.1" Barrel, Black - 182M116UA0B - Primary Weapons Systems

Primary Weapons Systems MK116 .223 Wylde Upper with 16.1" Barrel, Black - 182M116UA0B

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Primary Weapons Systems

Primary Weapons Systems MK1 Mod 1 Complete Upper .223 Wylde 7.75 Barrel - Primary Weapons Systems

Primary Weapons Systems MK1 Mod 1 Complete Upper .223 Wylde 7.75 Barrel

$1,099.95 $999.55

Primary Weapons Systems

Primary Weapons Systems MK1 5.56x45mm AR Lower, Black - 222M100SM1B - Primary Weapons Systems

Primary Weapons Systems MK1 5.56x45mm AR Lower, Black - 222M100SM1B

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Primary Weapons Systems

Primary Weapons Systems MK1 5.56x45mm AR Lower, Black - 222M100RM1B - Primary Weapons Systems

Primary Weapons Systems MK1 5.56x45mm AR Lower, Black - 222M100RM1B

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Primary Weapons Systems

Primary Weapons Systems MK1 Mod-1M Upper for AR-15 .223 Wylde 11.8 Barrel - Primary Weapons Systems

Primary Weapons Systems MK1 Mod-1M Upper for AR-15 .223 Wylde 11.8 Barrel

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Primary Weapons Systems

Primary Weapons Systems MK109 MOD 2-M Pistol Upper Receiver .300 AAC Blackout 9.75in Barrel 1-8 Twist Matte Black - Primary Weapons Systems

Primary Weapons Systems MK109 MOD 2-M Pistol Upper Receiver .300 AAC Blackout 9.75in Barrel 1-8 Twist Matte Black

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Primary Weapons Systems

Primary Weapons Systems MK1 5.56x45mm AR Lower, Black - 18M100RM1B - Primary Weapons Systems

Primary Weapons Systems MK1 5.56x45mm AR Lower, Black - 18M100RM1B

$527.99 $389.95

Primary Weapons Systems

Primary Weapons Systems MK116 MOD 1-M Upper .223 Wylde 16.1 Barrel - Primary Weapons Systems

Primary Weapons Systems MK116 MOD 1-M Upper .223 Wylde 16.1 Barrel

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Primary Weapons Systems

Primary Weapons Systems MK109 MOD1-M Upper Receiver 9.75 inch Barrel 1-8 Twist Matte Black - Primary Weapons Systems

Primary Weapons Systems MK109 MOD1-M Upper Receiver 9.75 inch Barrel 1-8 Twist Matte Black

MAP (Minimum Advertised Price) means this product is for sale at a lower price than what the manufacturer allows advertised.

Primary Weapons Systems

Primary Weapons Systems MK116 MOD 2-M Upper .223 Wylde 16.1 Barrel - Primary Weapons Systems

Primary Weapons Systems MK116 MOD 2-M Upper .223 Wylde 16.1 Barrel

Primary Weapons Systems

Primary Weapons Systems MK116 MOD2-M Upper Receiver 16in bbl .223 Wylde 3-Setting Adjustable Gas System FSC556 Compemsator Black - Primary Weapons Systems

Primary Weapons Systems MK116 MOD2-M Upper Receiver 16in bbl .223 Wylde 3-Setting Adjustable Gas System FSC556 Compemsator Black

Primary Weapons Systems

Primary Weapons Systems MK116 MOD 2-M Upper Receiver 7.62x39 16.1in 1-10 Twist FSC 30 3-Setting Adjustable Gas System Black - Primary Weapons Systems

Primary Weapons Systems MK116 MOD 2-M Upper Receiver 7.62x39 16.1in 1-10 Twist FSC 30 3-Setting Adjustable Gas System Black

Primary Weapons Systems

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