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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
Eye Relief Between AR10 and AR15
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<blockquote data-quote="LouBoyd" data-source="post: 568549" data-attributes="member: 9253"><p>I couldn't tell that you had asked a question in your first post. Just statements. In the second though I'll take exception to your use of terms. Cant is a rotation about the axis of the bore. It's not likely you'd get a scope mount to correct cant. As to dimensional differences between a DPMS LR(() and an ar.15, the DPMS receiver is approximately 1" longer than that of AR-15 That is divided up about 1/2" (or a bit less) behind the trigger and about 1/2" (or a bit more) in front of the trigger. it depends on the position of the rigger shoe you use. So if you put the same fixed length stock on both receivers, it will result in about 1/2 more length of pull (shoulder to trigger) than on an AR-15. If you mount mount the scope in the same location on both with respect the front of the receiver, you should get a cheek weld with respect to your trigger hand such that the scope has about 1/2" more eye relief though the scope will be about 1" further from your shoulder. It's not exact because different people hold differently. Both AR-15's and DPMS LR-() recievers have their rails parallel with the rifle bore, and both can accept an inclined (or wedged) rail (not canted). Another difference is that vertical spacing from the AR-15 bore center line to the Picatinny rail top face is a little smaller than on an DPMS LR-(). If that's too high you can also get rings made in a single piece which give the scope inclination (20MOA typical) without the intermediate inclined spacer. Of course, you don't have to use the same length stock on an AR-15 and an LR-() so you can have any length of pull and eye relief you want. </p><p></p><p>Not that any of that matters. Just pick the rings and mount them where you get a comfortable cheek weld and your eye properly centered and spaced from the scope's eyepiece. I've never needed a cantilevered rail for either an AR-15 or a DPMS LR-(). Perhaps it's needed for some scopes or for some people's facial shape.</p></blockquote><p></p>
[QUOTE="LouBoyd, post: 568549, member: 9253"] I couldn't tell that you had asked a question in your first post. Just statements. In the second though I'll take exception to your use of terms. Cant is a rotation about the axis of the bore. It's not likely you'd get a scope mount to correct cant. As to dimensional differences between a DPMS LR(() and an ar.15, the DPMS receiver is approximately 1" longer than that of AR-15 That is divided up about 1/2" (or a bit less) behind the trigger and about 1/2" (or a bit more) in front of the trigger. it depends on the position of the rigger shoe you use. So if you put the same fixed length stock on both receivers, it will result in about 1/2 more length of pull (shoulder to trigger) than on an AR-15. If you mount mount the scope in the same location on both with respect the front of the receiver, you should get a cheek weld with respect to your trigger hand such that the scope has about 1/2" more eye relief though the scope will be about 1" further from your shoulder. It's not exact because different people hold differently. Both AR-15's and DPMS LR-() recievers have their rails parallel with the rifle bore, and both can accept an inclined (or wedged) rail (not canted). Another difference is that vertical spacing from the AR-15 bore center line to the Picatinny rail top face is a little smaller than on an DPMS LR-(). If that's too high you can also get rings made in a single piece which give the scope inclination (20MOA typical) without the intermediate inclined spacer. Of course, you don't have to use the same length stock on an AR-15 and an LR-() so you can have any length of pull and eye relief you want. Not that any of that matters. Just pick the rings and mount them where you get a comfortable cheek weld and your eye properly centered and spaced from the scope's eyepiece. I've never needed a cantilevered rail for either an AR-15 or a DPMS LR-(). Perhaps it's needed for some scopes or for some people's facial shape. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
Eye Relief Between AR10 and AR15
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