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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Out Of Stock
HK416 A5, MR556 A4 Barrel - 5.56 / .223 - 16.5"
H&K Heckler & Koch
$389.95H&K HK MR556 A4/A5 16.5" Barrel This 16.5" factory H&K MR556 A4 barrel is cold hammer-forged from high-quality steel for exceptional durability, accuracy, and longevity. Manufactured to Heckler & Koch’s exacting standards, it features a...HKP-21931$389.95 -
Out Of Stock
HK MR556 A4 Gas Block - Complete
H&K Heckler & Koch
$237.95H&K HK MR556 A4 Gas Block - Complete Factory HK MR556 A4 adjustable gas block ideal for switching between suppressed and unsuppressed firing. Compatible With: HK MR556 A4 Nefarious Arms A5 barrels Features: Genuine H&K factory...HKP-21928$237.95 -
HK416, MR556 Cleaning Kit - Green Pouch
H&K Heckler & Koch
$64.95H&K HK 416/MR556 Cleaning Kit with Green Pouch This is a genuine HK factory cleaning kit. Includes: Nylon storage bag, olive green Nylon brush Cleaning rod, 6 parts Barrel brush Chamber brush Oil brush Oil bottle, empty Cleaning wipes, 50 ea...HKP-21623$64.95 -
HK Universal Polymer 3.25" Rail
H&K Heckler & Koch
$59.95HK Universal Polymer Rail With Screws for the G36E, SL8, USC, UMP HK German manufacture. New universal picatinny rail for forward section or forearm. Compatible With: G36E SL8 USC UMP All variants Specifications: Length: 3.25"hkp-18489$59.95 -
HK416 Commercial OTB Buffer Tube HK E1 Stock Combo
H&K Heckler & Koch
$469.95HK 416 OTB E1 Stock & Buffer Tube Combo - Commercial Genuine HK 416 E1 commercial stock with the new style marine environment "over the beach" buffer tube. Buffer tube has ball bearing rollers to tighten the stock when locked in position, and helps...hkp-18361$469.95 -
HK416, MR556 Front Sight Roll Pin
H&K Heckler & Koch
$4.95HK MR556 & 416 Front Sight Roll PinHKP-02659$4.95 -
Ergo M-LOK Harris Bipod Mount
Ergo
$33.95M-LOK Harris Style Bipod Mount Features: Contoured to fit Harris-style bipods Black anodized 6061-T6 alum.HKP-17851$33.95 -
Out Of Stock
Ergo KeyMod Handstop
Ergo
$51.95KeyMod Hand Stop/Barricade Stop in Black Aggressive textured front for enhanced traction on barricades and obstacles Features: Low profile base also functions as a comfortable hand stop Black anodized 6061-T6 aluminum Compatible With: All KeyMod style...HKP-17885$51.95 -
Picatinny Optic Mount Shield - Aimpoint T2, H2 - S.W.O.R.D.S
Frost Defense
$239.95Aimpoint T-2, H-2 Optic Mount - S.W.O.R.D.S - Picatinny Mount The S.W.O.R.D.S Enhanced optic shield designed for Aimpoint T2/H2 red dot sights. This patent-pending mount system provides robust glare and impact protection by surrounding the ocular and...HKP-22338-M$239.95 -
Picatinny Optic Mount - Holosun 510C, HM3X Combo
Holosun
$599.95Holosun 510C & HM3X Combo - Optic & Magnifier The HS510C is a versatile open reflex optic designed for long gun applications. HS510C is at home on carbines, PCCs, and shotguns due its durable design. HS510C features and aluminum housing...HKP-21657$599.95 -
KDG HK MR556 10" M-LOK Rail System
KDG Kinetic Development Group
$374.95Rail System - 10" - M-LOK - HK MR556 The New KDG HK 556 M-LOK rails are direct mount rail system, replacing the factory HK 556 rail systems. These new rails are identical in design to their big brother, the KDG HK 762 M-LOK Rail system. Like the 762...HKP-19246$374.95 -
HK416, HK417, MR556, MR762 Stock Release Lever Pin
H&K Heckler & Koch
$6.95HK 416 & MR556 E1/E2 & HK 417, MR762 Stock Release Lever Pin Brand new factory German production. A must have spare part that should be replaced each time you remove or install the roll pin. Made in Germany.HKP-16860$6.95