HK Rifle / SMG Parts
Elevate Your HK Rifle with Premium Parts – MP5, HK416, SP5, and More!
Enhance your HK rifle with top-notch parts and accessories. From HK MP5 and HK MP5K to HK SP5 and HK UMP or HK USC, we offer a vast selection. Discover high-quality magazines, binary triggers, stocks, grips, barrels, handguards, sights, and more for your firearm. Whether you own an HK416, HK SP5K, HK G36, or HK MP5 22, we have the Heckler and Koch rifle parts you've been looking for. Shop now to upgrade your rifle to perfection.
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On Sale
AK Binary Trigger - Curved - BFSIII - 9mm - BLEMISHED
FA Franklin Armory
Now: $385.99Was: $534.95Franklin Armory BFSIII AK-C1 - 9mm - Curved Trigger - BLEMISHED DAMAGED PACKAGING - PRODUCT UNAFFECTED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The...HKP-19730-BNow: $385.99Was: $534.95 -
HK416 A1, MR556 A1 Barrel Nut
Nefarious Arms
$49.95Nefarious Arms HK MR556 A1/416 A1 Barrel Nut Whether replacing a barrel nut or sourcing the best parts for your build, the Nefarious MR556/416 barrel nut is an excellent option. Meticulously crafted in the US to the highest quality standards...HKP-22279$49.95 -
On Sale
HK 90 Series Locking Roller for Bolt Head - 7.96mm
MKE
Now: $22.95Was: $28.95MKE -4 Roller for Bolt Head 7.96mm - Under-sized The proper roller size is essential for proper head spacing and bolt gap. Made in Turkey by MKE on HK tooling. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the...HKP-22238Now: $22.95Was: $28.95 -
On Sale
HK MP5 Thread Protector Cap - .40 S&W, 10mm - 14x.75 - USED
H&K Heckler & Koch
Now: $34.95Was: $49.95H&K Heckler and Koch's Thread Protector Cap Threaded 14x.75 - USED for MP5 .40, 10 ONLY 4 UNITS AVAILABLE - AS PICTURED Priced for ONE cap - Condition Varies by Unit - Each unit Sold INDIVIDUALLY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL...HKP-00422-BNow: $34.95Was: $49.95 -
Out Of StockOn Sale
HK MP5 M63 - Tri-Rail Handguard - USED
Surefire
Now: $289.95Was: $584.95SureFire HK MP5 M63 Tri-Rail Handguard - USED Surefire Tri-rail handguard for the MP5, perfect for those seeking an ultimate old-school tactical look! Rare and hard to find. Don't miss the opportunity to complete the ultimate setup and rock-solid...HKP-99232Now: $289.95Was: $584.95 -
HK91, G3 Bolt Carrier - Full Auto - Surplus
H&K Heckler & Koch
$129.95Surplus Full-Auto Steel Bolt Carrier for HK91, G3 Used full-auto steel bolt carrier for HK91 and G3 pattern rifles. Manufactured by HK, EBO, or FMP on original Heckler and Koch tooling. Compatible With: HK91, G3 In-spec. clones and custom buildsHKP-22160-M$129.95 -
On Sale
HK91, G3 Caliber Conversion Kit - .22LR - BLEMISHED
H&K Heckler & Koch
Now: $545.95Was: $945.95Heckler and Koch HK G3, HK91 .22LR Caliber Conversion Kit - BLEMISHED THESE KITS INCLUDE A BENT BARREL AND ONE MAGAZINE. BLEMISHED PARTS ARE SOLD AS IS. THIS KIT IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Convert any HK91 or HK...HKP-01147-BNow: $545.95Was: $945.95 -
HK MR556 A4 Upper, Complete - Full Auto and Ejection Door
H&K Heckler & Koch
$845.95HK Heckler and Koch A4 Complete Upper with Full Auto Ejection Door for HK MR556 The HK MR556 A4 Complete Upper is a superior factory assembly that comes fully equipped with a forward assist and an ejection port door, providing unparalleled reliability...HKP-21929$845.95 -
On Sale
B&T APR308 Deployment Bag - With Sling
B&T Brugger & Thomet
Now: $199.95Was: $349.95B&T APR308 Deployment Bag - With Sling Hidden for years in an unmarked crate, these genuine B&T contracted deployment cases are perfect for keeping your valuable B&T APR rifle safe and secure. The cases were made in Poland by NFM Group...HKP-21881Now: $199.95Was: $349.95 -
HK21E, HK23E Compression Springs - Inner Buffer, Outer Buffer
H&K Heckler & Koch
$59.95H&K HK21E/23E Inner & Outer Buffer Compression Springs An unissued set of inner and outer buffer compression springs for your HK21E/23E buffer, sourced directly from HK Germany. Most HK21E/23E buffers in the U.S are first-generation, which use...HKP-21856$59.95 -
HK G3 Front Sight Ring
H&K Heckler & Koch
$7.95H&K HK G3 Front Sight Ring Factory HK replacement front sight ring. Compatible With: HK G3HKP-21641$7.95 -
Out Of Stock
HK MR762 Factory Flash Hider - 15x1 RH
H&K Heckler & Koch
$54.95H&K HK MR762 Factory Flash Hider - 15x1 RH Factory flash hider with 15x1 right-hand threads. Perfect for completing a build or replacing a worn or missing part. Compatible With: HK MR762HKP-21481$54.95