HK 21/23/11 Series
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H&K 91/G3/MSG90 5 Round Magazine Spring
H&K Heckler & Koch
$22.95H&K 91/G3/MSG90 5 Round Magazine Spring This factory HK spring is designed for the 5-round HK91, G3, and MSG90 magazines. Built for durability and reliable feeding, it's an essential replacement part to keep your magazine in top condition. Compatible...HKP-21827$22.95 -
H&K HK11 Recoil Spring
H&K Heckler & Koch
$18.95H&K HK11 Recoil Spring This German-made HK11 recoil spring is longer than the standard G3 springs but has the same pattern. As a project spring, this part can be cut down for use on G3 and HK33-type recoil rods. Many U.S.-built HK11's use G3 springs...HKP-21858$18.95 -
H&K HK21E/11E Magazine Adapter Housing
H&K Heckler & Koch
$418.95H&K HK21E/11E Magazine Adapter Housing No longer in production, this magazine adapter housing is a rare find for your build or collection. The housing is fully welded but comes stripped with no small parts included. This part is in new, unissued...HKP-21850$418.95 -
H&K HK21E/23E Inner & Outer Buffer Compression Springs
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 -
H&K HK21E/23E Rear Sight Base
H&K Heckler & Koch
$89.95H&K HK21E/23E Rear Sight Base Factory German HK21E/23E rear sight base ready to weld on your build. The rear sight base serves as the mounting point for the rear sight, providing stability and proper alignment for accuracy on your HK21E or HK23E. As...HKP-21849$89.95 -
Out Of Stock
HK21E, HK23E Vertical Battle Grip
H&K Heckler & Koch
$0.00New HK German Front Vertical Battle Grip This vertical grip mounts directly to the front shroud and can be mounted at several angles depending on the shooter's option. This item is no longer available or in production. Compatible With: HK 21e HK 23e HK...HKP-00574$0.00 -
Out Of Stock
MM HK 21 (7.62x51/.308) Trunnion
H&K Heckler & Koch
$0.00US Made HK21 Trunnion By Michael's Machine (MM) These are the finest US-made trunnions available.HKP-00246$0.00 -
MM HK 23E (5.56/.223) Belt Box
Michaels Machines
$599.95HK23E & MM23E Belt Box Brand new HK23E, MM23E US made feed box. The German units have long since been out of production. These are exact copies of the German units. Made in the USA. Compatible With: MM23E HK23EHKP-17579$599.95 -
Out Of Stock
MM HK 23E (5.56/.223) Complete Feed Mechanism
Michaels Machines
$3,999.95MM HK 23E (5.56/.223) Complete Feed Mechanism New US manufactured HK23E feed mechanism complete with top plate and push pin. The complete unit a great spare to have on hand. Compatible With: Factory HK23E and MM23E firearmsHKP-17578$3,999.95 -
Out Of Stock
MM HK 23E (5.56/.223) Light Rifle Barrel
Michaels Machines
$0.00HK 23E (5.56/.223) Light Rifle Barrel Brand new US-made custom rifle barrel. 17.75-inch barrel includes the flash hider and the factory-correct barrel handle 1 x 9 twist. This has a lighter profile to save on weight...HKP-02514$0.00 -
H&K 21E/11E/PSG1/MSG90 Firing Pin
H&K Heckler & Koch
$119.95HK German 21E, 11E, PSG1, & MSG90 Firing Pin New HK genuine German firing pin. These firing pins are no longer in production from HK. We have a limited number available and once they are gone, they are gone for good. Compatible With: HK...HKP-01758$119.95