A lot of bandwidth is spent debating the 'proper' staking of an AR15 gas key. Additionally, some on the internet stress that having 1 in 7 twist is the best. I guess that this is because twist isn't optimized for different applications/rifles/bullet weights/etc. Reading some posts on internet forums you would think that any other twist simply won't fire a bullet.
Anyway, back to gas key staking. For some reason some folks are unwilling (or unable) to re-stake it themselves. DSARMS has come up with a non-traditional solution ds-arms-looks-to-end-gas-key-staking-with-thier-new-keyloc that is quickly visible to verify and requires no additional work. It is nice for the folks that simply don't like the look of the traditional hammer & punch method.
I don't know anything about their BCG's but it is very clean looking.
Oh, and on the second topic of twist did I mention that S&W is releasing an AR15 with 1 in 8 twist! http://www.smith-wesson.com/webapp/wcs/stores/servlet/Product4_750001_750051_786006_-1_757785_757784_757784_ProductDisplayErrorView_Y
Why do I mention it? Because they feel that it is the best all around twist for those wanting to shoot the range of 55gr - 77gr bullets. This is something that companies like Olympic Arms, Rock River Arms, LaRue have been saying for awhile.
Twist is always a compromise that I don't think that 1:7 is necessarily the best for a 16" bbl semi-auto civilian rifle.
From S&W:
the reasoning for the barrel twist change to 1-8 vs. 1-7 is to allow shooters with bullet weights in the 70-77 grain have optimum accuracy as well as shoot great with the 55-69 grainers.
Here is a nice little Shooting Times article about handloading the AR that talks briefly about twist: http://www.shootingtimes.com/2011/01/04/ammunition_st223_120606/
He is someone that agrees:
A twist rate of 1:8 inches is the best compromise for those who wish to shoot reasonably light and reasonably heavy bullets in the .223 Remington, and it is what I prefer for all-around use.
Some folks on the internet will be angry. :)
