HK416 / MR556 Series
Our extensive collection boasts a wide array of HK MR556 and HK 416 parts, including precision HK MR556 Barrels and durable HK 416 Stocks. Elevate your rifle's functionality with HK 416 Handguards and HK MR556 Triggers, designed for the discerning shooter seeking top-tier performance.
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HK CC9 Magazine Spring - 12 Round
H&K Heckler & Koch
$5.95Heckler and Koch 12-Round Magazine Spring for HK CC9 Genuine 12-round HK CC9 steel magazine spring. Compatible With: HK CC9HKP-22509$5.95 -
HK416, MR556 Upper Receiver - Stripped - No Forward Assist
H&K Heckler & Koch
$489.99HK416, MR556 Upper Receiver - Stripped - No Forward Assist Genuine HK HK416 upper receiver designed for HK416 and MR556 rifle platforms. This stripped receiver does not include a forward assist or ejection port door. Compatible With HK416, MR556 MR223HKP-22506$489.99 -
On Sale
HK416, G36 Flash Hider - 5.56 - Threaded 1/2x28
Advanced Armament
Now: $55.95Was: $79.95Advanced Armament BlackOut Flash Hider for 5.56 Rifles – 51T - Threaded 1/2x28 DAMAGED PACKAGING COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The 3-prong...HKP-99403Now: $55.95Was: $79.95 -
On Sale
HK416 (5.56/.223) Compensator Flash Hider - Threaded 1/2x28 - BLEMISHED
H&K Heckler & Koch
Now: $29.95Was: $39.95HK 416 (5.56/.223) Compensator Flash Hider - Threaded 1/2x28 - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Threaded 1/2x28 for use on all HK 416,...HKP-16926-BNow: $29.95Was: $39.95 -
On Sale
HK416, HK417, MR556, MR762 German E1 Convex Butt Pad - USED
H&K Heckler & Koch
Now: $47.95Was: $64.95HK416, HK417, MR556, MR762 German E1 Convex Butt Pad - USED ONLY 1 UNIT AVAILABLE - AS PICTURED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The HK Convex buttpad can be used to swap out on the...HKP-01915-USEDNow: $47.95Was: $64.95 -
On Sale
HK Ambidextrous Sling - Green - USED
H&K Heckler & Koch
Now: $108.95Was: $149.95HK Ambidextrous Sling - Green - USED ONLY 1 UNIT AVAILABLE - AS PICTURED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. This sling is the factory HK Green 1.25" Ambi Sling with dual HK sling hooks...HKP-00183-USEDNow: $108.95Was: $149.95 -
On Sale
HK416 Operators Manual - USED
H&K Heckler & Koch
Now: $39.95Was: $54.95Heckler and Koch HK416 Operators Manual - USED Original operator’s manual for the HK416 rifle system. This factory manual provides guidance on operation, maintenance, and safety procedures and is suitable for reference, replacement, or collection...HKP-99387Now: $39.95Was: $54.95 -
On Sale
HK416, MR556, HK417, MR762 Trigger - Advanced Performance - BLEMISHED
Rise Armament
Now: $179.95Was: $259.99RISE Armament RA-535 Advanced Performance Trigger for HK416, MR556, HK417, MR762 - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED DAMAGED PACKAGE COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL...HKP-99381Now: $179.95Was: $259.99 -
WOOX Angled Grip - M-LOK - AFG
WOOX
$88.95WOOX M-LOK Angled Grip Compact angled foregrip for M-LOK handguards, built with a reversible dual-wall structure and checkered texture for a secure, consistent support-hand index. Features: Flat-bottom design for added stability and...HKP-22465$88.95 -
HK416, MR556 A4 Hammer Washer
H&K Heckler & Koch
$58.95Heckler and Koch Hammer Washer for HK MR556 OEM hammer washer for HK MR556 and HK416 rifles. Factory-spec replacement washer for the hammer assembly, ideal for repairs, rebuilds, or returning rifles to original HK configuration. Compatible...HKP-22434$58.95 -
HK MP5, MP5K, HK416, MR556 Flash Hider - 1/2x28 - Taper Mount
JMAC Customs
$116.951/2x28 - Plan B Taper Mount Flash Hider for MP5, HK416, MR556, APC223 The 360HD is the latest evolution in JMac Custom's Recoil Reduction Device (RRD) family of muzzle brakes, designed to meet the needs of serious shooters and...HKP-22408$116.95 -
JMK Compact Vertical Foregrip with Hand stop - M-LOK
JMK
$88.95JMK Compact Vertical Foregrip with Hand stop - M-LOK The JMK Vertical Foregrips are ideally suited for applications with restricted space. Equipped with a rapid, straightforward M-LOK attachment system, it can be mounted on any configuration with an...HKP-22406-M$88.95