HK21 / HK23 / HK11 Series

HK 11E Magazine Exchange Kit- AS SHOWN HK21E to HK11E conversion kit to convert an HK21E to an HK11E to accept HK91/G3 style magazines. Converts from belt fed to a magazine fed on one platform of firearm. Includes: HK 11E Bolt Carrier Group Complete (no...

HK 11E bolt carrier HK21E to HK11E bolt carrier used to convert an HK21E to an HK11E to accept HK91/G3 style magazines. This is the HK11E bolt carrier only. Includes: HK 11E Bolt Carrier Last units no longer made- these were the LAST units HK Germany...

HK 21E & 23E Series Feed Mechanism Roller Axle  

HK21E & HK23E Forward Assist Compatible With: HK 21 HK 21E HK 23E HK 11 HK 13

Heckler and Koch German #17 Locking Piece - 36 Degree One of the best ways to slow down and tame that HK21). Can also be used for HK91/G3 special projects such as suppressors, & heavier than normal loads. This is also the factory correct locking...

H&K Clubfoot Central Buttstock Section New HK German 21E, 23E Central Stock Section. Can Be Used On All HK Rifles. A Great Upgrade For That HK91/G3 or HK93,33,53. Many People Use These To Upgrade Their Existing Stocks For The Neat Look & Feel Of...