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Posted: 5/4/2014 1:27:44 PM EDT
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SO im pushing my wife to build a 10.5" barreled SBR. Im pretty sure that the buttstock she wants is the MAgpul UBR... i know its heavy as fk but she has one on a 16" and loves it. I know that the Barrel length is measured from closed bolt face, but does anyone know or could find out if they have an SBR with the same barrel length and stock as this; what is the overall length for her form1? Extended and collapsed? I think once she builds this, I may attempt an MK18 or similar SBR.
I was going to measure the UBR with a stripped upper on it, and add 10.5" but im afraid this will throw off the measurement by a half inch or so and dont want any legal issues. Thanks, |
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Quoted:
SO im pushing my wife to build a 10.5" barreled SBR. Im pretty sure that the buttstock she wants is the MAgpul UBR... i know its heavy as fk but she has one on a 16" and loves it. I know that the Barrel length is measured from closed bolt face, but does anyone know or could find out if they have an SBR with the same barrel length and stock as this; what is the overall length for her form1? Extended and collapsed? I think once she builds this, I may attempt an MK18 or similar SBR. I was going to measure the UBR with a stripped upper on it, and add 10.5" but im afraid this will throw off the measurement by a half inch or so and dont want any legal issues. Thanks, You're missing the easy route. If she ready has one on a 16" rifle, take that OAL and deduct 5.5". The measurement is with any adjustable stock fully extended. |
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Quoted:
You're missing the easy route. If she ready has one on a 16" rifle, take that OAL and deduct 5.5". The measurement is with any adjustable stock fully extended. Quoted:
Quoted:
SO im pushing my wife to build a 10.5" barreled SBR. Im pretty sure that the buttstock she wants is the MAgpul UBR... i know its heavy as fk but she has one on a 16" and loves it. I know that the Barrel length is measured from closed bolt face, but does anyone know or could find out if they have an SBR with the same barrel length and stock as this; what is the overall length for her form1? Extended and collapsed? I think once she builds this, I may attempt an MK18 or similar SBR. I was going to measure the UBR with a stripped upper on it, and add 10.5" but im afraid this will throw off the measurement by a half inch or so and dont want any legal issues. Thanks, You're missing the easy route. If she ready has one on a 16" rifle, take that OAL and deduct 5.5". The measurement is with any adjustable stock fully extended. Facepalm..... sonofabitch....... |
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You're missing the easy route. If she ready has one on a 16" rifle, take that OAL and deduct 5.5". The measurement is with any adjustable stock fully extended. 16" isn't always 16". I took the muzzle device off and measured to the back of a mil-spec buffer tube then rounded down to the nearest inch. You are not breaking any law if you get it wrong. Once it's under 16" barrel and/or 26" OAL, the rest is just for descriptive purposes. They don't measure to the 10,000th of an inch. |
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16" isn't always 16". I took the muzzle device off and measured to the back of a mil-spec buffer tube then rounded down to the nearest inch. You are not breaking any law if you get it wrong. Once it's under 16" barrel and/or 26" OAL, the rest is just for descriptive purposes. They don't measure to the 10,000th of an inch. Quoted:
Quoted:
You're missing the easy route. If she ready has one on a 16" rifle, take that OAL and deduct 5.5". The measurement is with any adjustable stock fully extended. 16" isn't always 16". I took the muzzle device off and measured to the back of a mil-spec buffer tube then rounded down to the nearest inch. You are not breaking any law if you get it wrong. Once it's under 16" barrel and/or 26" OAL, the rest is just for descriptive purposes. They don't measure to the 10,000th of an inch. Pulled my head out of my ass and remembered i have a fubar barrel that is 16.5" to bolt face. OAL with barrel on and buttstock extended is 34.5" The length from the end of the upper to the end of the buttstock is 18.5" 34.5-18.5 = 16 But i cannot see any overlap when hold my dowel rod beside the barrel... not sure where that .5" is going. In any case, Desired barrel length is 10.3" daniel defense barrel.. difference from stock barrel of 6.2" from What i have so far, im looking at 34.5 - 6.2 = 28.3" OAL..... does this look legit?? And just from legal side, this is the correct measurement (extended, not collapsed) She will be shooting with it collapsed or on the 2nd or 3rd position 90% of the time.... I think im making this harder than it should be, but id rather be safe than in jail... |
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Quoted:
16" isn't always 16". I took the muzzle device off and measured to the back of a mil-spec buffer tube then rounded down to the nearest inch. You are not breaking any law if you get it wrong. Once it's under 16" barrel and/or 26" OAL, the rest is just for descriptive purposes. They don't measure to the 10,000th of an inch. Quoted:
Quoted:
You're missing the easy route. If she ready has one on a 16" rifle, take that OAL and deduct 5.5". The measurement is with any adjustable stock fully extended. 16" isn't always 16". I took the muzzle device off and measured to the back of a mil-spec buffer tube then rounded down to the nearest inch. You are not breaking any law if you get it wrong. Once it's under 16" barrel and/or 26" OAL, the rest is just for descriptive purposes. They don't measure to the 10,000th of an inch. Yeah...my 16" M&P 15-22 is definitely longer than that. So I guess the proper suggestion would be measure current barrel with dowel, find the difference between that and 10.5", and subtract that amount from current OAL. Measure everything you can accurately, so multiple roundings don't put you off too far. Because the same 16" isn't always 16" may also apply to your 10.5" barrel. |
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Yeah...my 16" M&P 15-22 is definitely longer than that. So I guess the proper suggestion would be measure current barrel with dowel, find the difference between that and 10.5", and subtract that amount from current OAL. Measure everything you can accurately, so multiple roundings don't put you off too far. Because the same 16" isn't always 16" may also apply to your 10.5" barrel. Quoted:
Quoted:
Quoted:
You're missing the easy route. If she ready has one on a 16" rifle, take that OAL and deduct 5.5". The measurement is with any adjustable stock fully extended. 16" isn't always 16". I took the muzzle device off and measured to the back of a mil-spec buffer tube then rounded down to the nearest inch. You are not breaking any law if you get it wrong. Once it's under 16" barrel and/or 26" OAL, the rest is just for descriptive purposes. They don't measure to the 10,000th of an inch. Yeah...my 16" M&P 15-22 is definitely longer than that. So I guess the proper suggestion would be measure current barrel with dowel, find the difference between that and 10.5", and subtract that amount from current OAL. Measure everything you can accurately, so multiple roundings don't put you off too far. Because the same 16" isn't always 16" may also apply to your 10.5" barrel. Bad thing is.... dont have the barrel due to that whole constructive intent thing.... that was going to be the last purchase.....I know the better way might be to go the other direction and d a pistol build THEN put on the buttstock, but can it still be done well this way? |
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Quoted:
In any case, Desired barrel length is 10.3" daniel defense barrel.. difference from stock barrel of 6.2" from What i have so far, im looking at 34.5 - 6.2 = 28.3" OAL..... does this look legit?? And just from legal side, this is the correct measurement (extended, not collapsed) She will be shooting with it collapsed or on the 2nd or 3rd position 90% of the time.... Yeah, that's about right. A good estimate is barrel length + 19". The stock you're using may cause that to be slightly different. Correct measurement is extended, regardless of how it's actually shot. That's always seemed odd to me, as if I registered a Short Barreled Rifle, you'd think they want the shorter config. Nope...fully extended, and not counting any muzzle device unless permanently attached. |
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Bad thing is.... dont have the barrel due to that whole constructive intent thing.... that was going to be the last purchase.....I know the better way might be to go the other direction and d a pistol build THEN put on the buttstock, but can it still be done well this way? You're fine. I went the pistol route, but your method works as well, just not as much fun. 
That's what I was saying, is to measure everything you do have. You can measure you're actual barrel (instead of assuming 16") and your actual OAL. Use those figures to calculate using the 10.3" you expect to buy. That's as accurate/close as the ATF could expect you to be. |
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