Posted August 31, 2017 3:00 am by Comments

By Pete

With the increased popularity of the Heckler & Koch SP5K and other HK-patterned roller delayed firearms, I thought it might be a good idea to demystify some of the basic mechanics and maintenance that new owners might face from time to time. So when my new faux four position trigger group for an update to […]

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Source:: The Firearm Blog

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