Screw Without Shoulder
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 3 8 16x3 Thumb Screw Without Shoulder Steel Zinc6  US $4.00
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 6 32x5 8 Thumb Screw Without Shoulder Steel Zinc 40 US $3.00
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 6 32x3 4 Thumb Screw Without Shoulder Steel Zinc 30 US $3.00
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 10 32x1 1 2 Thumb Screw Without Shoulder Steel Zinc 35 US $3.00
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 10 24x3 4 Thumb Screw Without Shoulder Steel Zinc 30 US $3.00
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 1 4 20x2 Thumb Screw Without Shoulder Steel Nickel 12 US $3.00
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 1 4 20x3 4 Thumb Screw Without Shoulder Steel Zinc15 US $3.00
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 8 32x3 4 Thumb Screw Without Shoulder Steel Zinc 50 US $3.00
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 1 4 20x2 1 2 Thumb Screw Without Shoulder Steel Zinc 12 US $3.00
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 10 32x1 Thumb Screw Without Shoulder Steel Zinc 25 US $2.50
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A Rugged But Tiny Red Dot Sight
Carbines were originally a means of protection for troops whose job was not to engage the enemy directly with a personal weapon or who had to travel on horseback. The classic example is the World War Two M1 carbine and its variants the M1A1 and M2. This served the purpose perfectly as it was small, light in weight, reliable, offered good firepower and the accuracy to engage targets out to 300 metres. Lethality and penetration were its only limitations. The post war period saw a focus on engagement distances of 300 meters and less - the distance at which Soviet motor rifle troops would dismount from their armored carriers. Whilst current operations in Afghanistan have called into question the employment of a short barrelled carbine, under most circumstances, something capable of aimed fire out to 400 metres is perfectly adequate. Barred from possessing the military 14.5" barrels without onerous paperwork and tax, civilians bought up 16" barrelled AR15s in droves.
The military heritage of the AR15 gives it an undeniable appeal, but they're put to a plethora of uses including self defence, action shooting, hunting and pest control. There are a huge variety of things you can bolt on to an AR15 carbine, but therein lies the problem. Why take a wonderful sleek, compact, well-balanced firearm and bolt all sorts of junk all over it? You can soon end up with a veritable Christmas tree of ugly lumps of metal and plastic with your cherished carbine hidden somewhere beneath.
There is an undeniable appeal in the AR's sheer modularity. A foregrip flashlight doesn't add much weight and will make your rifle night capable at a fraction of the cost of NV. A tactical sling adds very little weight for the huge improvement in ergonomics and readiness it imparts. Then you come to a sighting system. Does a sighting system have to be bulky and cumbersome to be effective? Fortunately the answer is no.
Aimpoint's Micro H-1 and T-1 weigh 3.7 ounces inclusive of Picatinny mount and take up all of 2.4 inches of rail. To save you cash Aimpoint deleted the night vision capability found in the T-1 to make a less expensive Micro H-1 model for hunters and sports shooters. The Micro T-1 and Micro H-1 both feature a 4 MOA red dot for rapid target acquisition. Both models are barely larger than a flip up rearsight. A single CR2032 battery can keep the red dot glowing for 50,000 hours or five years and the sight will withstand immersion in 80ft of seawater. They can be used in conjuction with an Eotech G23.FTS flip to side magnifier for those occasions when you need to be able to ID targets that much further out - some units in Afghanistan are already utilising this capability. Many manufactures offer an amazing plethora of mounts for these tiny sights at various heights and with reach forward/backward configurations, with or without quick release, for almot any weapon down to 9mm pistol size.
Eotech recently added a range of small holographic weapon sights that employ a single transversely mounted CR123 battery to reduce length and eliminate the chance of recoil induced connection issues. The battery is held in by a tethered cap with an O-ring which is far more secure than a latch. The new Eotech XPS and EXPS red dot sights all have cantilevered battery housings to clear the Delta rings on AR15 style rifles. They start with the non night capable, thumb screw attached XPS2 models and gradually increase in specification, the XPS3 adding night vision compatibility and, in the EXPS3 series, a 7mm higher quick release mount to enable co-witnessing of BIUS in the lower 1:3 of the field of view and side mounted NV buttons to enable very close mounting of NV or 3X magnifiers. Taking up 2.75 inches of rail space, these units can run continuously for 600 hours on one battery. In this series -0 models have a 1 MoA reticlered dot in a 65 MoA circle, -1 models have one 1 MoA red dot and -2 models have a 65 MoA circle with two 1 MoA red dots to enable aiming off for range. They weigh 8 to 11.2 ounces and are waterproof to 10 meters or 33 feet.
How do the sights compare? The Aimpoint is somewhat more expensive and offers slightly less flexibility in head/eye placement but it is tiny, utterly rugged and has vastly longer battery life. Eotech have the edge in longer range engagements with a smaller dot and you can adopt more radical shooting positions due to their totally parallax free HUD. Whichever you purchase, you will know you have purchased the state of the art in units relied upon by military and law enforcement units throughout the US and worldwide.
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