The best tool for assembling the ar-10/sr25 - Geissele AR-10/SR25 Reaction Rod

This is my first build to assemble AR-10/ DPMS LR-308 and I could not start until I get this tool. I've heard and see some folks putting together AR-10 with not so good results, marring the upper or worst by by cracking it. That gets expensive. This tool is amazing. It took little time and with ease assembling the upper assembly with the barrel together. You just can't do it properly without this reaction rod. Price wise its reasonable same as everywhere, with free shipping you can't go wrong. Best of all, Optic Planet seems to have all that you need to whatever project your'e involved with. Overall prices are affordable and service is excellent. Be buying more stuff soon. Highly recommend.