CMMG G3 Mag Compatible AR-10 Lower
CMMG are taking pre-orders for their new stripped lower reliever that is compatible with DPMS Panther Arms .308 AR-10 style upper receivers. The lower uses H&K G3 magazine which can be bought for under $5!
Some minor modifications are needed to the upper to accommodate the larger magazine. The price is $449.95 and it can be ordered online.
Many thanks to Tom for the info.

CMMG are taking pre-orders for their “new stripped lower reliever”
Front or back?
The standard for AR15 mag is Knight Armament (SR25/M110) because that is what the US military use. Keep that in mind if any of you decide to get an AR-10 in the future.
Anyway our gun club did a group buy for G3 mags couple years back. We bought it for $0.50 each. Some members resold it for $10 at the local gun shows. That’s capitalism at it best. Good times.
I wish I knew about these lowers earlier I bought an ar 10 but mags are really pricey.