I have been turning the interwebs upside down since I first saw the ALG Defense 6 Second Mount previewed at SHOT several years ago. Since I still don't know of any good resources for info on it I thought I would start this thread where Ill share my experience with the mount.
The 6SM is attached my to Gen 3 G17 RTF2 G17, sporting a 4MOA T1, SF X300U and a Sentinel Designs magwell, other than a 3.5# connector the internals are stock.
I have a small number of rounds through a Unity equipped G17 w/Deltapoint, other than that red dots on handguns is a pretty new thing to me.
Installing:
The mount had a very snug fit, I stippled my frame heavily and therefore the forward thumb pads were even tighter than a stock glock, but snug should be good for keeping zero.
The SF X300U is now also way tighter fitting and almost no wobble even with the universal mount attached to the 6SM.
On my slide i punched the rear sight off and did a quick fitment check, everything seemed fine. However my front sight (Warren fiber front) was too big I discovered after my first live fire session. As I inspected the mount I found a decent dent in the mount from the front sight as the slide moves further rearwards during recoil than it does at slide stop (where I tested it before shooting) so case in point: steel front sight 1- 0 aluminum mount.
Shooting:
I zeroed the T1 benching the gun on a small bean bag @25m, I moved foward to 10 and 15 to test some more, and I seemed to notice a slight shift in POI vs POA/POI @25, might be me, some if the offset of optic and bore, but not as much as I saw, will have to shoot more to see before I can say more.
Holsters:
The reason I liked the Unity setup was the availability of holsters, and specifically my favorite the Safariland 6354DO, so far the only option seems to be Off the Grid Concepts for the 6SM.
OTG has published the possibility of doing a level 1 retention holster for the 6SM, I hope they do as I need the active retention to cover all of my uses.
General observations:
I have previously tried to point my "other strong hand" thumb towards the target, but sometimes it slips and point slightly upwards while resting at on the front thumb pad, now with the mount installed my thumb stays put as the mount prevents my thumb from moving upwards.
However on the right hand side of the mount, the point attached to the trigger guard pin interferes with my trigger finger, it rubs my finger, maybe just a new piece of my hand that needs hardening or I need to change the angle my trigger finger interfaces the trigger, will have to see.
So far a little more than 100rds with the mount, will update as a continue to shoot with it.
The 6SM is attached my to Gen 3 G17 RTF2 G17, sporting a 4MOA T1, SF X300U and a Sentinel Designs magwell, other than a 3.5# connector the internals are stock.
I have a small number of rounds through a Unity equipped G17 w/Deltapoint, other than that red dots on handguns is a pretty new thing to me.
Installing:
The mount had a very snug fit, I stippled my frame heavily and therefore the forward thumb pads were even tighter than a stock glock, but snug should be good for keeping zero.
The SF X300U is now also way tighter fitting and almost no wobble even with the universal mount attached to the 6SM.
On my slide i punched the rear sight off and did a quick fitment check, everything seemed fine. However my front sight (Warren fiber front) was too big I discovered after my first live fire session. As I inspected the mount I found a decent dent in the mount from the front sight as the slide moves further rearwards during recoil than it does at slide stop (where I tested it before shooting) so case in point: steel front sight 1- 0 aluminum mount.
Shooting:
I zeroed the T1 benching the gun on a small bean bag @25m, I moved foward to 10 and 15 to test some more, and I seemed to notice a slight shift in POI vs POA/POI @25, might be me, some if the offset of optic and bore, but not as much as I saw, will have to shoot more to see before I can say more.
Holsters:
The reason I liked the Unity setup was the availability of holsters, and specifically my favorite the Safariland 6354DO, so far the only option seems to be Off the Grid Concepts for the 6SM.
OTG has published the possibility of doing a level 1 retention holster for the 6SM, I hope they do as I need the active retention to cover all of my uses.
General observations:
I have previously tried to point my "other strong hand" thumb towards the target, but sometimes it slips and point slightly upwards while resting at on the front thumb pad, now with the mount installed my thumb stays put as the mount prevents my thumb from moving upwards.
However on the right hand side of the mount, the point attached to the trigger guard pin interferes with my trigger finger, it rubs my finger, maybe just a new piece of my hand that needs hardening or I need to change the angle my trigger finger interfaces the trigger, will have to see.
So far a little more than 100rds with the mount, will update as a continue to shoot with it.
