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1:8
In mathematics, the infinite series 1/2 + 1/4 + 1/8 + 1/16 + ··· is an elementary example of a geometric series that converges absolutely.
There are many different expressions that can be shown to be equivalent to the problem, such as the form: 2−1 + 2−2 + 2−3 + ...
The sum of this series can be denoted in summation notation as:
For sale is a complete upper with some very high quality components. The Upper receiver is an Aero Precision slick side forged lightweight upper. Handguard is a 13.5" Midwest Industries Combat Rail with 7 sides of M-Lok and QD attachments. The barrel is a 16" Criterion CORE 4150 CMV barrel in a...
For sale is a 16" Complete AR15 upper. The upper receiver is a slick slide lightweight 7075 T6 Aero Precision upper. Barrel is a Mid Length Pinned Gas, 16" Ballistic Advantage 416R Stainless Premium Black line Hanson Profile barrel, with a 223 Wylde chamber, 1:8 twist, and A2 muzzle device...
I've got an un-fired upper receiver with dust cover & forward assist installed and an un-fired 5.56 1:8 government barrel with A2 flash hider. Unsure of manufacture on either. Asking $40 for both.
For sale is an complete 18" SPR rifle upper. The Upper is an 18" Ballistic Advantage 416R Stainless nitrided barrel with a 1:8 twist and 223 Wylde chamber. 15" free float M-lok rail and a VG6 Delta Muzzle Device. Comes with Magpul vertical grip, BCG, and charging handle. Bought on Black Friday...
SOLD
For sale is a Ballistic Advantage heavy fluted. 416r stainless premium line barrel. It has a 223 Wylde chamber, 1:8. Twist, and rifle length gas system. Extremely soft shooting. Shoots cheap wolf and American eagle to MOA, and vmax to nearly 1/2 moa. Great barrel only a few hundred rounds...