Abraham....take a look at this:
http://www.mechtechsys.com/index.php
Lots of very real advantages.
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Return to “AR Pistol vs AR SBR - Which Is The Best Choice?”
- Sat Sep 05, 2015 4:25 pm
- Forum: General Gun, Shooting & Equipment Discussion
- Topic: AR Pistol vs AR SBR - Which Is The Best Choice?
- Replies: 34
- Views: 24831
- Fri Sep 04, 2015 1:23 pm
- Forum: General Gun, Shooting & Equipment Discussion
- Topic: AR Pistol vs AR SBR - Which Is The Best Choice?
- Replies: 34
- Views: 24831
Re: AR Pistol vs AR SBR - Which Is The Best Choice?
This much about them is fact. The BATFE has ruled that these add-on Sig stocks are legal. But, just don't shoulder it and you're fine.
SBR AR-15's are finicky at best. The gas system is always a concern. Some ammo won't operate the gas system properly, so there is that concern.
The other issue is ammunition itself. 5.56 was designed for a 20" barrel. Half that barrel length does terrible things to the performance of the round. 1:8 or 1:7 twist is a must and then you still will need to run heavier bullet weights to get adequate performance on target. Fortunately there are some better heavy bullet rounds out now.
If you're building an SBR or pistol, I would go 6.8 SPC instead of 5.56 (sorry, opinion). This much is fact. The 6.8 was designed specifically to handle short barrels without losing so much performance. A lot of people like the 300 BLK. Based on the popularity of the round, it must be acceptable as well. Either one would make a fine SBR or pistol.
EDIT: One real negative to these is muzzle blast. There are few things on earth as loud as a 10" barreled AR-15 shooting hot 5.56mm ammo.
SBR AR-15's are finicky at best. The gas system is always a concern. Some ammo won't operate the gas system properly, so there is that concern.
The other issue is ammunition itself. 5.56 was designed for a 20" barrel. Half that barrel length does terrible things to the performance of the round. 1:8 or 1:7 twist is a must and then you still will need to run heavier bullet weights to get adequate performance on target. Fortunately there are some better heavy bullet rounds out now.
If you're building an SBR or pistol, I would go 6.8 SPC instead of 5.56 (sorry, opinion). This much is fact. The 6.8 was designed specifically to handle short barrels without losing so much performance. A lot of people like the 300 BLK. Based on the popularity of the round, it must be acceptable as well. Either one would make a fine SBR or pistol.
EDIT: One real negative to these is muzzle blast. There are few things on earth as loud as a 10" barreled AR-15 shooting hot 5.56mm ammo.