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So, as you may all know, I purchased a Knoxx CopStock a while ago and had plans to try it out. Here is an overview of it's operation and my results.
First, this is what it looks like:
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Installation was simple. On my Remington 870 Express, you just remove two phillips screws from the buttpad, and then one larger screw inside the stock. Then you slip the Knoxx CopStock on and tighten on hex screw. Total time to install was around 5 minutes.
Usage:
I went to the range today and shot a few 2 3/4" full load slugs. The first thing that happens is that the spent shells jam upon eject when the stock is folded up:
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I was pretty disappointed with this. However, I supposed I was not surprised as the stock hits the shotgun pump handle when I chamber a round. It actually is so tight that it almost locks the shotgun in the 'open' position and requires a fair amount of force to un-jam the pump handle.
The solution of course is to unfold the stock.This is done by simply gripping the stock over the top and squeezing the sides together. This releases the lock and allows you to swing the stock over the top.
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With the stock down you can still shoot just holding the grip, or pressed up against your shoulder.
I managed to get five shots off and there was a NOTICIBLE reduction in recoil. In fact, I was surprised that it was negligible, and I was actually aiming low to compensate for the previous recoil I had experienced.
After that I inspected everything to be sure there were no loose bits. Well, during the shooting, my Tac Star light fell off, so that was obviously loose. However, the Knoxx had also come loose.
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As a result I wrapped up and came home. I re-installed the light, this time much tighter, and I also re-tightened the Knoxx CopStock with considerably more force. Unfortunately, Knoxx neither provides torque specs nor is the opening large enough to get a socket-based hex key in, so I was forced to slide a crescent wrench onto the short end of my hex key and snug it down as tight as I could.
I'll do another few rounds in a few days with an update.
I believe I will look into using a Dremel to cut down the pump handle so the CopStock does not hit. I am pretty surprised it hits to begin with, because it's clear that it could (1) easily be widened at the factory and (2) bent lower to allow proper shell ejection. Why this happened seems to be poor design and testing. Anyway, I may contact Knoxx to see what they have to say.
Hope this is helpful.
First, this is what it looks like:
Installation was simple. On my Remington 870 Express, you just remove two phillips screws from the buttpad, and then one larger screw inside the stock. Then you slip the Knoxx CopStock on and tighten on hex screw. Total time to install was around 5 minutes.
Usage:
I went to the range today and shot a few 2 3/4" full load slugs. The first thing that happens is that the spent shells jam upon eject when the stock is folded up:
I was pretty disappointed with this. However, I supposed I was not surprised as the stock hits the shotgun pump handle when I chamber a round. It actually is so tight that it almost locks the shotgun in the 'open' position and requires a fair amount of force to un-jam the pump handle.
The solution of course is to unfold the stock.This is done by simply gripping the stock over the top and squeezing the sides together. This releases the lock and allows you to swing the stock over the top.
With the stock down you can still shoot just holding the grip, or pressed up against your shoulder.
I managed to get five shots off and there was a NOTICIBLE reduction in recoil. In fact, I was surprised that it was negligible, and I was actually aiming low to compensate for the previous recoil I had experienced.
After that I inspected everything to be sure there were no loose bits. Well, during the shooting, my Tac Star light fell off, so that was obviously loose. However, the Knoxx had also come loose.
As a result I wrapped up and came home. I re-installed the light, this time much tighter, and I also re-tightened the Knoxx CopStock with considerably more force. Unfortunately, Knoxx neither provides torque specs nor is the opening large enough to get a socket-based hex key in, so I was forced to slide a crescent wrench onto the short end of my hex key and snug it down as tight as I could.
I'll do another few rounds in a few days with an update.
I believe I will look into using a Dremel to cut down the pump handle so the CopStock does not hit. I am pretty surprised it hits to begin with, because it's clear that it could (1) easily be widened at the factory and (2) bent lower to allow proper shell ejection. Why this happened seems to be poor design and testing. Anyway, I may contact Knoxx to see what they have to say.
Hope this is helpful.
