AR15/M-16 5.56/.223 Std Power Buffer Spring $24.97 AR-15, M-16 .223/5.56 action spring standard power. 16504 Only 1 left in stock AR15/M-16 5.56/.223 Std Power Buffer Spring quantity Add to cart Categories: AR-15, Wolff Gun Springs Related products 45 Degree folding backup sights $95.00