Collection: UPPER RECEIVERS AND PARTS
Upper receiver components for both AR-15 and HK416 platforms — engineered for precision, compatibility, and proven durability.
- Stripped and complete upper receivers
- Gas pistons and piston rod assemblies
- Barrel nuts and other upper accessories
- Gas blocks and alignment components
- Parts selected for fitment, reliability, and platform-correct builds
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NA5 - HK 416A5 Style Adjustable Gas Block
Regular price $375.00 USDRegular price -
Replacement Regulator Screw Kit for Nefarious Arms Adjustable Gas Block
Regular price $40.00 USDRegular price -
NA5 Replacement Gas Block Cap
Regular price $50.00 USDRegular price -
M110 / MKII Gas Block
Regular price $325.00 USDRegular price -
M110 / MKII Gas Block Pin Kit
Regular price $50.00 USDRegular price -
B&T M-LOK Handguard for HK416 / MR223 (11") - Black
Regular price $275.00 USDRegular price -
SR-25 / M110 Steel Barrel Nut
Regular price $75.00 USDRegular price -
Barrel Nut - HK416 A5
Regular price $40.00 USDRegular price -
HK416, MR556 Piston Rod, Complete Assembly
Regular price $110.00 USDRegular price -
HK416, MR556 PDW Piston Rod, Complete Assembly
Regular price $150.00 USDRegular price -
Enhanced Reliability Gas Piston
Regular price $75.00 USDRegular price -
HK416 / MR556 / G36 Complete Gas Piston #50205381
Regular price $50.00 USDRegular price -
HK416 PDW / G36C / G36K Complete Gas Piston, HK #50215865
Regular price $100.00 USDRegular price -
HK416 A5 Bayonet Lug | Genuine HK Factory Part #50237318
Regular price $75.00 USDRegular price -
HK Roll Pin, Bayonet Adaptor HK416 / A5 - Genuine HK #50928508
Regular price $10.00 USDRegular price -
HK 33mm Front Folding Sight – HK416 / HK417 / MR556 / MR762 | Genuine HK #235251
Regular price $180.00 USDRegular price -
HK 33mm Front Folding Sight – HK416 / HK417 / MR556 / MR762 | Genuine HK #235905
Regular price $150.00 USDRegular price -
HK416 A5 Front Sight Adaptor | Genuine HK Factory Part #50237319
Regular price $100.00 USDRegular price -
HK Roll Pin, Front Sight Base HK416 / A5 - Genuine HK #50975052
Regular price $10.00 USDRegular price -
Gas Tube, Carbine Length
Regular price $15.00 USDRegular price -
Gas Tube – Mid-Length 11.75" | Mil-Spec Stainless Steel
Regular price $18.75 USDRegular price -
Gas Tube, "KAC" Intermediate Length
Regular price From $35.00 USDRegular price -
Gas Tube, Rifle Length
Regular price $20.00 USDRegular price
