My M4-Based SBR Build: On Hold Indefinitely

A couple of people have been following and asking about the status of my M4 Rifle build, hence I have decided to give this update. As of this writing, I have put my M4 Rifle build on indefinite hold, mainly because of problems acquiring the two most critical parts of the rifle: The bare Lower Receiver, and the Barrel.

I was set to get these two items from Twin Pines, as they were offering the cheapest price for them that I know of (brand new, anyway). Their casted, bare Lower Receiver costs only Php 15,000 (approximately Usd 365), while their 7.5" barrel made by Dassan of South Korea costs only Php 9,000 (approximately Usd 220).

Initially, they told me that to get these two items, I would only need licensing requirements for a High Powered Rifle (HPR), plus licensing fee of Php 7,500 (approximately Usd 180). So a couple of months ago, I prepared the requirements (National Bureau of Investigation Clearance, which I fortunately had one ready at that time, Proof of Employment as Overseas Filipino Worker, etc.), and the funds, and proceeded to get the items from them.

My Review of the Burris Fast Fire 3 Part Three

'Batteries, and Battery Life'
One problem with these Reflex Sights as opposed to iron sights is that they use batteries, which are consumable, and therefore have limited lifespans. Since I bought the unit in May 2012, I have had two battery changes already. The first battery change came a month after I bought it. I think the reason why the battery life was so short, was because the battery that came with the unit was the generic, unmarked made-in-china type of battery.

The battery needed for the unit was the CR1632, and after the generic china battery, I bought a branded Panasonic battery for the unit for P50 each at one of the kiosks in the malls specializing in batteries. The Panasonic battery lasted about 5 months of fairly heavy use, until it gave out last week (October 2012). 

Generic CR1632 battery on the left, compared with the Panasonic version