5.56x45mm NATO Gun Parts

Strike Industries AR-15 Enhanced Lower Build Kit for .223/5.56 - Black

Aero Precision M4E1 Builder Set w/ 15" ATLAS R-ONE M-LOK Handguard - Chocolate Chip Camo

Aero Precision M4E1 Builder Set w/ 9.3" ATLAS S-ONE M-LOK Handguard - Chocolate Chip Camo

Aero Precision M4E1 Builder Set w/ 9.3" Enhanced M-LOK Handguard - Chocolate Chip Camo

Aero Precision M4E1 Builder Set w/ 15" ATLAS R-ONE M-LOK Handguard - OD Snakeskin

Aero Precision M4E1 Builder Set w/ Enhanced M-LOK Handguard - OD Snakeskin - 10.7"

AR MAGLOCK AR-15 Gen 4 Fixed Magazine Lock and Release Solution - With Steel EZ Pull Takedown Pin

Anderson Manufacturing AM-15 AR-15 Builder Set - 15" - Punisher

LMT Defense 5.56 Lower Parts Kit w/ Two Stage AXLE Trigger

Anderson Mil-Spec Lower Build Kit - Stainless (Black)

Aero Precision M4E1 Builder Set w/ 12.7" ATLAS R-ONE M-LOK Handguard - Gunmetal Grain

Aero Precision M4E1 Builder Set w/ 15" ATLAS R-ONE M-LOK Handguard - Gunmetal Grain

Aero Precision M4E1 Builder Set w/ 15" ATLAS S-ONE M-LOK Handguard - Gunmetal Grain

Aero Precision M4E1 Builder Set w/ 10.7" Enhanced M-LOK Handguard - Gunmetal Grain

Aero Precision M4E1 Builder Set w/ 9.3" ATLAS S-ONE M-LOK Handguard - Cavern Flecktarn Camo

Aero Precision M4E1 Builder Set w/ Enhanced M-LOK Handguard - OD Snakeskin - 15"

Aero Precision M4E1 Builder Set w/ 9.3" ATLAS R-ONE M-LOK Handguard - Yorktown Cerakote

Dd 14.5'''' M4a1 Somcom Upper Receiver W/ Eotech Optic - Dd 14.5'''' M4a1 Socom Upper W/ Exps3-0 Holographic Red Dot

Black Rain Ordnance SPEC15, 5.56mm, 10.5 Barrel, 12 Handguard OCL Polonium 556 Suppressor Complete Upper

Black Rain Ordnance SPEC15, 5.56mm, 10.5 Barrel, 15 Handguard OCL Polonium 556 Suppressor Complete Upper

Armaspec Superlight Lower Parts Kit Stainless LPK .223/5.56 - Gold

Armaspec Superlight Gun Builders Stainless LPK .223/5.56 - Gold

Armaspec S1 Enhanced Trigger Guard - Gold

Anderson Manufacturing AM-15 AR-15 Builder Set - 15" - Punisher