H&K Heckler and Koch -2 roller HK German for HK MP5 40/10
Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production.
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 and minus-sized rollers decrease the bolt gap.
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