Shop all the replacement lenses for military sunglasses available on the official oakley standard issue online store.
													
																	Oakley si ballistic m frame 2 0 lenses. 
									
	
		
	
																	M frame 2 0 and 3 0 have the advantage for me of being able to use all my m frame lenses primarily heaters if you remove the clip. 
																	Exclusive prices on official site. 
																	Oakley si ballistic m frame 2 0 sunglasses. 
																	Hdo is a collection of patented technologies that allow the industrial m frame to surpass ansi z87 1 optical standards including tests for clarity by maintaining visual sharpness at greater viewing distances refractive power by minimizing the affects of a common optical aberration that causes inferior lenses to magnify images like prescription lenses and prismatic power by minimizing. 
															
													
									
	
		
	
																	The m frame 2 0 additionally meets mil spec mil prf 31013. 
																	The most obvious change from the regular m frame is the thicker more rugged frame. 
																	M frame lens medium sized to fit most average sized faces three dimensional contouring that matches the curvature of the eye and offers a huge field of vision 100 percent uv and blue light protection fits all ballistic m frame 2 0 glasses along with military issue ballistic m frame 11 138 and 11 105 fits si ballistic m frame 2 0. 
																	M frame alpha might have the best coverage but it is not by much. 
															
													
									
	
		
	
																	Introduced in 2006 the tough oakley si ballistic m frame 2 0 tactical sunglasses were designed more for battle than for beauty. 
																	All lenses are made of pure plutonite a proprietary material that offers the highest level of optical clarity available in eyewear.