Small Parts
Explore our extensive selection of HK small parts at HKParts, perfect for repairs, upgrades, and custom builds. Our inventory includes high-quality, precision-machined replacement parts and maintenance kits designed for a wide range of HK models. Whether you need push pins, springs, or custom components, our HK-specific small parts ensure optimal performance and durability for your firearm.
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Out Of Stock
HK21E, HK23E Extractor Cylindrical Pin
H&K Heckler & Koch
$0.00HK 21E, HK 23E Extractor Cylindrical Pin This part holds the extractor in place on the bolt head. A great spare to have on hand.HKP-00863$0.00 -
Out Of Stock
HK21, HK23E, PSG1, MSG90 Firing Pin Spring
H&K Heckler & Koch
$0.00HK German HK21E, HK23E Firing Pin Spring A must-have spare and replacement part. No longer in production. Compatible With: HK21E HK23E HK11E HK13 E HK21 HK MSG90 HK PSG1HKP-00816$0.00 -
Out Of Stock
HK21 Firing Pin
H&K Heckler & Koch
$0.00HK German 21 Firing Pin - Old Stock Compatible With: HK21HKP-00546$0.00 -
HK 21E Feed Mechanism Roller Axle
H&K Heckler & Koch
$64.95HK 21E & 23E Series Feed Mechanism Roller AxleHKP-02062$64.95 -
Out Of Stock
HK PSG1, MSG90 Locking Rollers - Set of 12 - Factory Complete
H&K Heckler & Koch
$0.00HK PSG1 Factory Locking Roller Set Complete RARE! (Every Size) That HK Made For The MSG90 / HKPSG1/ & HK23E AS Follows - 6, - 4, - 2, Standard 8mm, +2, +4 (Pair Of Each Size) PSG1 / 23E Half Moon Roller Set Complete (Total Of 12 Rollers) More...HKP-00822$0.00 -
HK MSG90 Locking Roller - 8.00mm - Titanium
H&K Heckler & Koch
$284.95HK German MSG-90 Titanium 8.00mm Set (one of two rollers) Half Moon Rollers Half moon rollers. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to remember the size you need to order -...HKP-00227$284.95 -
HK MSG90 Locking Roller -2 - 7.98mm - Titanium
H&K Heckler & Koch
$284.95HK German MSG-90 Titanium -2 or 7.98mm Half moon rollers. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to remember the size you need to order - plus-size rollers increase the bolt gap...HKP-01063$284.95 -
HK MSG90 Locking Roller +4 - 8.04mm - Titanium
H&K Heckler & Koch
$329.95MSG90 (7.62x51/.308) +4 Rollers 8.04mm Set -Titanium Half moon rollers. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to remember the size you need to order - plus-size rollers...HKP-02454$329.95 -
HK MSG90 Locking Roller +2 - 8.02mm - Titanium
H&K Heckler & Koch
$284.95MSG90 (7.62x51/.308) +2 Rollers 8.02mm Set -Titanium Half moon rollers. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to remember the size you need to order - plus-size rollers increase the...HKP-02453$284.95 -
Out Of Stock
HK91, G3 7.92mm Roller - (-8)
H&K Heckler & Koch
$0.00HK German Factory -8 Roller 7.92mm in size New HK German negative 8 (7.92mm) that is used for proper head spacing. Hard to find a factory HK roller in this size. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt...HKP-00346$0.00 -
Out Of Stock
HK91, G3 Firing Pin - Titanium
HKP HK Parts
$29.95HK G3, 91 & PTR Firing Pin - Titanium Grade 6 weapons grade Titanium manufacture. Made 100% in the USA A must have upgrade to have on hand as the firing pin is one of the most abused components in the HK G3, 91 & PTR weapon system. Get the...HKP-17937$29.95 -
Out Of Stock
HK MP5 Thread Protector Cap - 10mm / .40S&W - 14x.75
H&K Heckler & Koch
$0.00H&K MP5 40/10 Thread Protector Cap - Threaded 14x.75 HK German Factory Thread Protector For All MP5 40/10 Factory HK Barrels. The Thread Pitch Is Metric 14x75HKP-00422$0.00