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Shop 161 Deals on 5.56×45mm NATO Parts Kits

Browse 5.56×45mm NATO Parts Kits for sale at the lowest prices online.

Lower Parts Kits

Upper Receivers

Lower Receivers

Bolt Carrier Groups

Doublestar Corp. OOPS! Replacement Gun Parts Kit - AR791 - Doublestar Corp.

Doublestar Corp. OOPS! Replacement Gun Parts Kit - AR791

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

Doublestar Corp.

CMMG AR-15 Lower Parts Kit - 55CA6C5 - Cmmg

CMMG AR-15 Lower Parts Kit - 55CA6C5

CMC Triggers Complete Lower Receiver Parts Kit - 81500 - Cmc

CMC Triggers Complete Lower Receiver Parts Kit - 81500

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

Luth-AR Lower Parts Builder Kit - LRPK-BLDR - Luth-Ar

Luth-AR Lower Parts Builder Kit - LRPK-BLDR

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

CMMG Bolt Rehab Parts Kit, Black - 55AFF68 - Cmmg

CMMG Bolt Rehab Parts Kit, Black - 55AFF68

Spike's Tactical Lower Receiver Parts Kit - SLPK100 - Spikes Tactical

Spike's Tactical Lower Receiver Parts Kit - SLPK100

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

Spikes Tactical

LBE Unlimited .223/5.56 AR-15 Lower Parts Kit Without Trigger Guard Or Pistol Grip, Black - ARK15LPK - Lbe

LBE Unlimited .223/5.56 AR-15 Lower Parts Kit Without Trigger Guard Or Pistol Grip, Black - ARK15LPK

LBE Unlimited .223/5.56 AR-15 Lower Parts Kit With Trigger Guard And Pistol Grip, Black - AR15LPKT - Lbe

LBE Unlimited .223/5.56 AR-15 Lower Parts Kit With Trigger Guard And Pistol Grip, Black - AR15LPKT

CMC Lower Assembly Kit With Flat Trigger, Black - 81503 - Cmc

CMC Lower Assembly Kit With Flat Trigger, Black - 81503

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

Armaspec AR-15 Lower Parts Kit, Black - ARM152-BLK - Armaspec

Armaspec AR-15 Lower Parts Kit, Black - ARM152-BLK

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

CMMG Survival Parts Kit - 55AFFB4 - Cmmg

CMMG Survival Parts Kit - 55AFFB4

Rosco Bloodline 10.5" Barrel, 5.56x45mm - SPBL105556BCGGTCNGB001 - Rosco Manufacturing

Rosco Bloodline 10.5" Barrel, 5.56x45mm - SPBL105556BCGGTCNGB001

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

Rosco Manufacturing

Battle Arms Development Enhanced Lower Parts Kit - 100-025-392 - Battle Arms Development

Battle Arms Development Enhanced Lower Parts Kit - 100-025-392

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

Battle Arms Development

Rosco Bloodline 11.5" Barrel, 5.56x45mm - SPBL115556BCGGTCNGB001 - Rosco Manufacturing

Rosco Bloodline 11.5" Barrel, 5.56x45mm - SPBL115556BCGGTCNGB001

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

Rosco Manufacturing

Doublestar Corp. AR-15 Lower Parts Kit 223 Rem/5.56, Black - AR270 - Doublestar Corp.

Doublestar Corp. AR-15 Lower Parts Kit 223 Rem/5.56, Black - AR270

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

Doublestar Corp.

Seekins Precision Lower Receiver Parts Builder's Kit For 223 Rem & 556NATO - 0011510063 - Seekins

Seekins Precision Lower Receiver Parts Builder's Kit For 223 Rem & 556NATO - 0011510063

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

Spikes Tactical Enhanced Lower Parts Kit, Black - SLPK301 - Spikes Tactical

Spikes Tactical Enhanced Lower Parts Kit, Black - SLPK301

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

Spikes Tactical

Rosco Bloodline 12.5" Barrel, 5.56x45mm - SPBL125556BCGGTCNGB001 - Rosco Manufacturing

Rosco Bloodline 12.5" Barrel, 5.56x45mm - SPBL125556BCGGTCNGB001

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

Rosco Manufacturing

Rosco Manufacturing Bloodline Sauce Pack Barrel and Bolt Carrier Group Kit 5.56x45mm, Black - Rosco Manufacturing

Rosco Manufacturing Bloodline Sauce Pack Barrel and Bolt Carrier Group Kit 5.56x45mm, Black

$376.99 $292.00

Rosco Manufacturing

Troy Lower Receiver Parts Kit, 556 Nato, Black Finish, Troy Grip - Troy Industries

Troy Lower Receiver Parts Kit, 556 Nato, Black Finish, Troy Grip

$140.00 $129.95

Troy Industries

Doublestar Corp. Bolt Carrier Group Rebuild Kit - AR789 - Doublestar Corp.

Doublestar Corp. Bolt Carrier Group Rebuild Kit - AR789

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

Doublestar Corp.

Armaspec Superlight AR-15 Lower Parts Kit, Flat Dark Earth - ARM252-FDE - Armaspec

Armaspec Superlight AR-15 Lower Parts Kit, Flat Dark Earth - ARM252-FDE

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

Geissele Ultra Duty Lower Parts Kit, Black - 05-435B - Geissele

Geissele Ultra Duty Lower Parts Kit, Black - 05-435B

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

AR-15 Radian Weapons Builder Kit in Striking Radian Black Finish - Customizable Excellence - R0435 - Radian Weapons

AR-15 Radian Weapons Builder Kit in Striking Radian Black Finish - Customizable Excellence - R0435

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

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