I had one of the pistol models with the 13" barrel and vertical foregrip. I got it new back in the early '80s. It had an alloy receiver. It was really awkward to shoot, not really fun. It ran fine, but, it had a bear of a spring and practically destroyed the primers, and battered the cases during ejection. The military horizontal foregrips won't fit either. I was never happy with it, so I took it to a gunshow and swapped it for a Colt SAA.

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Wayne
Torn & Frayed