Product Details
HK21E outer buffer compression spring. Brand new, unissued old stock straight out of HK Germany.
There are two generations of HK21E HK23E buffers. The vast majority of buffers in America are first generation and use this spring. Gen. 2 uses a helical and plate spring column (flat spring).
ORIGINAL HK, MADE IN GERMANY
CONDITION: NEW
HK PART NUMBER 221229
NSN (NATO STOCK NUMBER) 5360-12-194-7534
